Cited by 328Digital Mental Health InterventionsMobile Health and mHealth ApplicationsAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

A Systematic Review of Cognitive Behavioral Therapy and Behavioral Activation Apps for Depression

Open access
Huguet, Anna, Rao, Sanjay, McGrath, Patrick J., Wozney, Lori, Wheaton, Mike, Conrod, Jill, Rozario, Sharlene·2016·PLOS ONE

Abstract

Depression is a common mental health condition for which many mobile apps aim to provide support. This review aims to identify self-help apps available exclusively for people with depression and evaluate those that offer cognitive behavioural therapy (CBT) or behavioural activation (BA). One hundred and seventeen apps have been identified after searching both the scientific literature and the commercial market. 10.26% (n = 12) of these apps identified through our search offer support that seems to be consistent with evidence-based principles of CBT or BA. Taking into account the non existence of effectiveness/efficacy studies, and the low level of adherence to the core ingredients of the CBT/BA models, the utility of these CBT/BA apps are questionable. The usability of reviewed apps is highly variable and they rarely are accompanied by explicit privacy or safety policies. Despite the growing public demand, there is a concerning lack of appropiate CBT or BA apps, especially from a clinical and legal point of view. The application of superior scientific, technological, and legal knowledge is needed to improve the development, testing, and accessibility of apps for people with depression.

AI snapshot

Written from the paper’s full text.

TL;DR

This systematic review identified 117 depression self-help apps, but only 12 (10.26%) appeared consistent with CBT or BA principles. The authors conclude that these CBT/BA apps have no published efficacy/effectiveness evidence, low fidelity to core CBT/BA ingredients, variable usability, and rarely include privacy or safety policies.

Key findings

  • Of 117 apps, 12 (10.26%) were classified as CBT/BA; no studies reported in the scientific literature determined benefits for any of these CBT/BA apps.
  • Median adherence to CBT principles was 15% (range 0–75%) and to BA principles was 18.75% (range 6.25–25%); the best CBT apps were Depression CBT Self-Help Guide (75%) and eCBT Mood (55%).
  • Usability heuristic adherence had a median of 83% (range 42–98%); highest scorers were MoodTools–Depression Aid (98%), Activity Diary (98%), and Depression Cure–The Free 12 Week Course (92%).
  • Only eCBT Mood and Depression CBT Self-Help Guide offered a privacy policy, and 5 of 12 apps (41.66%) provided safety information during crisis; no relationship was found between CBT/BA adherence and usability or popularity indicators.

Methods

  • Systematic review searching scientific databases (IEEE, ACM Digital Library, EMBASE, PubMed/Medline, PsychINFO, Web of Science) in November 2015 and the Canadian Apple App Store and Android Market/Google Play in November 2015 using “depression”; inclusion required native smartphone apps exclusively for depression, publicly available in Canada in December 2015, and in English.
  • Two reviewers screened and categorized apps with Cohen’s kappa reported at 0.69, 0.85, 0.92, and 0.89 across stages; CBT/BA apps were downloaded and evaluated on usefulness (expert-rated fidelity to CBT/BA core ingredients on a 0–2 scale and literature-based effectiveness), usability (Nielsen heuristics rated 1–5), and integration/infrastructure (privacy policy and safety).
  • Analysis used counts and percentages plus Spearman correlations between CBT/BA adherence, usability adherence, and popularity/acceptability indicators.

Limitations

  • Stated: the review was limited to English downloadable apps in Canada and only the two most popular platforms; apps on less prevalent platforms, in other languages/countries, or developed and tested in academic settings were excluded.
  • Stated: CBT/BA app evaluation was based on one expert’s opinion, and an expert panel could have increased credibility; lack of common constructs, outcome measures, definitions, and standards for other app types made cross-case comparison impossible.
  • Evident from the text: the included CBT/BA apps had no published efficacy/effectiveness studies, the CBT/BA sample was only 12 apps, and usability, privacy, and safety assessments each relied on single expert evaluators.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1371/journal.pone.0154248

Cites

72 of 72 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 29 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    The commercial marketplace search identified a total of 310 unique apps.

    “Our search of commercial marketplace identified a total of 310 unique apps.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Findingown data

    The 53 relevant manuscripts mentioned a total of 48 unique apps that met the inclusion/exclusion criteria.

    “The 53 manuscripts [9,14,15,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48, 49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65, 66,67,68,69,70,71] identified as relevant to the review made mention of a total of 48 unique apps that met our inclusion/exclusion criteria.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Findingown data

    One hundred and four commercial marketplace apps met the inclusion/exclusion criteria.

    “One hundred and four of these apps identified in the commercial marketplace meet our inclusion/exclusion criteria.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Findingown data

    10.26% (n = 12) of the 117 identified apps offer support consistent with evidence-based principles of CBT or BA.

    “10.26% (n = 12) of these apps identified through our search offer support that seems to be consistent with evidence-based principles of CBT or BA.”
    • Also stated in: § App characteristics · plain
      “Twelve of these 117 apps (10.26%) were classified by the reviewers as delivering CBT or BA; these CBT/BA apps were identified in the description by their developers as CBT or BA apps or they seemed to offer CBT or BA based on their general description (Table 3).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Findingown data

    Fifty-three of the 160 full-text manuscripts were relevant because all mentioned at least one native app addressed to people with depression.

    “Fifty-three out of 160 were relevant for our review because all them mention at least one native app addressed to people for depression.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Classified as probably not a substantial claim. 23
  • May combine two claims. 15
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The literature search yielded 2,789 abstracts.

    “The literature search yielded 2,789 abstracts”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    One hundred and sixty full-text manuscripts were reviewed at the full-text level.

    “160 full text manuscripts were reviewed at the full-text level.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The 53 manuscripts included at the first screening stage mentioned a total of 253 native apps for people with depression.

    “The 53 manuscripts included at this stage mentioned a total of 253 native apps for people with depression.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingcitation

    All apps identified through searching the scientific literature were simply cited in reviews and were not evaluated in primary research studies.

    “All the apps identified through searching the scientific literature were simply cited in reviews [14]; they were not evaluated in primary research studies.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [14] N Shen, 2015, Finding a depression App: A review and content analysis of the depression app marketplace, J Med Internet Res

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The cost of the CBT/BA apps ranged from $0.00 to $8.99.

    “The cost of these CBT/BA apps ranged from $0.00 to $8.99.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The Depression Cure: The Free 12 Week Course was not the app that received the highest number of reviews.

    “However, this app was not the one that received the highest number of reviews.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    The iPhone apps that received the highest number of reviews were Anti-depression and MoodTools-Depression Aid, both also available in the Google Play store.

    “The iPhone apps that received the highest number of reviews were the Anti-depression and MoodTools–Depression Aid apps, both of them also available for download in the Google Play store.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • May combine two claims.

    Findingown data

    The Depression CBT Self-Help Guide app's privacy policy indicates what information is collected and for what purpose, whether this information is shared with others, but it does not address users control.

    “Its privacy policy indicates what information is collected and for what purpose, whether this information is shared with others but it does not address users control.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingreasoning

    The few available apps that offer CBT or BA have either not been tested or the results derived from these tests have not been reported in the scientific literature.

    “The few available apps that offer CBT or BA have either not been tested or the results derived from these tests have not been reported in the scientific literature.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The most typical types of self-help support delivered through the 117 apps were education (n = 32, 27.35%), diagnostic/screening (n = 30, 25.64%), and state induction (n = 18, 15.38%).

    “The most typical type of self-help support delivered through these 117 apps was education (n = 32, 27.35%) and diagnostic/screening support (n = 30, 25.64%), followed by state induction (n = 18, 15.38%).”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    The Depression CBT Self-Help Guide app's privacy policy is available on the developer's homepage but is also available to users after they have downloaded the app.

    “This policy is available on the developer’s homepage but is also available to users after they have downloaded the app.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Of the 12 CBT/BA apps, 5 (41.67%) were available on iOS only and 5 (41.67%) on Android only.

    “Five of the 12 CBT/BA apps (41.67%) were available on iOS only and 5 (41.67%) on Android only.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • May combine two claims.

    Findingown data

    The Depression CBT Self-Help Guide and MoodTools-Depression Aid received high user satisfaction ratings (4.2 and 4.3, respectively).

    “The Depression CBT Self-Help Guide and The Mood Tools–Depression Aid were those Android apps with the highest number of downloads (i.e., between 100,000 and 500,000 downloads, and between 50,000 and 100,000, respectively) and received high user satisfaction ratings (average satisfaction rates were 4.2 and 4.3, respectively).”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The iPhone app that received the highest user satisfaction rating was The Depression Cure: The Free 12 Week Course (average satisfaction rating = 4.5).

    “The iPhone app that received the highest user satisfaction rating was The Depression Cure: The Free 12 Week Course app (average satisfaction rating = 4.5).”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • May combine two claims.

    Findingown data

    Of the 117 apps, 36 (30.77%) were available on iOS only, 74 (63.25%) on Android only, and 7 (5.98%) on both platforms.

    “Out of the total 117 apps, 36 apps (30.77%) were available on iOS only, 74 (63.25%) were available on Android only, and 7 (5.98%) were available across both platforms.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • May combine two claims.

    Findingown data

    The eCBT app has a brief privacy policy stating that information collected in the app is only accessed by the application on the device and that the developer does not collect any information about the user or the use of the app.

    “The eCBTapp has a brief privacy policy that states that the information collected in the app is only accessed by the application on the device and they do not collect any information about the user or the use of the app.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The Depression CBT Self-Help Guide app's privacy policy applies to this app in particular, but also other products of its developer (other apps and its homepage).

    “The Depression CBT Self-Help Guide app’s privacy policy applies to this app in particular, but also other products of its developer (other apps and its homepage).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The Depression CBT Self-Help Guide and MoodTools-Depression Aid were the Android apps with the highest number of downloads (100,000-500,000 and 50,000-100,000, respectively).

    “The Depression CBT Self-Help Guide and The Mood Tools–Depression Aid were those Android apps with the highest number of downloads (i.e., between 100,000 and 500,000 downloads, and between 50,000 and 100,000, respectively) and received high user satisfaction ratings (average satisfaction rates were 4.2 and 4.3, respectively).”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: App store descriptions and manuscript descriptions accurately represent the type of support an app offers.
  • Classified as probably not a substantial claim.

    Premisecitation

    Smartphones have been used to facilitate the delivery of healthcare interventions, including treatment of mental health conditions.

    “Smartphones have been used to facilitate the delivery of healthcare interventions including treatment of mental health conditions [13].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [13] Michael S. Application of smartphone technology in the management and treatment of mental illnesses. MPH. Thesis, University of Pittsburgh. 2011. Available: <ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://d-scholarship.pitt.edu/6783/" xlink:type="simple">http://d-scholarship.pitt.edu/6783/</ext-link>

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    Inter-rater agreement when categorizing the apps was 0.92, indicating almost perfect agreement.

    “The level of agreement between the two reviewers when categorizing the apps, using the Cohen’s kappa, was 0.92, indicating almost perfect agreement [17].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [17] JR Landis, 1977, The measurement of observer agreement for categorical data, Biometrics source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Both CBT and BA have meta-analytic level evidence in the treatment of depression.

    “Both CBT and BA have meta-analytic level of evidence in the treatment of depression[6,7].”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [6] P Cuijpers, 2007, Behavioral activation treatments of depression: a meta-analysis, Clin Psychol Rev source

      Not checked in the free run.

    • cites [7] AC Butler, 2006, The empirical status of cognitive-behavioral therapy: A review of meta-analyses, Clin Psychol Rev source

      Not checked in the free run.

  • May combine two claims.

    Interpretationown data

    The utility of the identified CBT/BA apps is questionable, given the absence of effectiveness/efficacy studies and the low adherence to core CBT/BA ingredients.

    “Taking into account the non existence of effectiveness/efficacy studies, and the low level of adherence to the core ingredients of the CBT/BA models, the utility of these CBT/BA apps are questionable.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Cross-referencing with apps identified in the scientific literature is sufficient to determine whether any efficacy or effectiveness study exists for the included CBT/BA apps.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Privacy policy scope and transparency were assessed as done by Sunyaev et al.

    “If a privacy policy was available the evaluator assessesed the scope and the level of transparency of the policy as done by Sunyaev et al. [21].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [21] A Sunyaev, 2015, Availability and quality of mobile mental health app privacy policies, J Am Med Inform Assoc source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Usability was evaluated using a common list of usability heuristics proposed by Nielsen & Mack.

    “He evaluated the user interface of each app using a common list of usability heuristics proposed by Nielsen & Mack [20].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [20] J Nielsen, 1994

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Inter-rater agreement at the third level of screening was almost perfect (kappa = 0.92).

    “With almost perfect agreement observed at this third level of screening (kappa = 0.92) [17], the remaining apps were reviewed by only one reviewer (SR).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [17] JR Landis, 1977, The measurement of observer agreement for categorical data, Biometrics source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    Inter-rater agreement for commercial marketplace app eligibility was 0.89 using Cohen's Kappa.

    “The level of agreement between both independent reviewers using the Cohen’s Kappa was 0.89.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    CBT and BA are accepted evidence-based first-line treatments for depression.

    “Cognitive Behavioural Therapy (CBT) and Behavioural Activation (BA) are now an accepted evidence-based first-line treatment for depression [5].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [5] National Collaborating Centre for Mental Health. Depression: The treatment and management of depression in adults. 2010. Available: <ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://www.nice.org.uk/guidance/cg90/evidence/cg90-depression-in-adults-full-guidance2" xlink:type="simple">https://www.nice.org.uk/guidance/cg90/evidence/cg90-depression-in-adults-full-guidance2</ext-link>

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Interpretationreasoning

    Use of an expert panel instead of only one expert could have increased the credibility of the conclusions.

    “Although expert opinion plays an important role when no research evidence exists, the use of an expert panel instead of only one expert could have increased the credibility of the conclusions.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Previous reviews have found no relationship between the quality of the apps and consumers reviews or ratings.

    “This finding is not surprising; previous reviews have found no relationship between the quality of the apps and consumers reviews or ratings [73,74].”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [73] NF BinDhim, 2015, A systematic review of quality assessment methods for smartphone health apps

      Not checked in the free run.

    • cites [74] Kuehnhausen M, Frost VS. Trusting smartphone apps? To install or not to install, that is the question. Cognitive Methods in Situation Awareness and Decision Support; IEEE International Multi-Disciplinary Conference; 2013 Feb 25–28; San Diego, CA, USA. IEEE; 2013. pp. 30–37. source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    This review was limited to English downloadable apps in Canada and only looked at the two most popular platforms when exploring the commercial market.

    “First, this review was limited to English downloadable apps in Canada and only looked at the two most popular platforms when exploring the commercial market.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    The evaluation of the CBT and BA apps was based on the opinion of one expert.

    “Second, the evaluation of the CBT and BA apps was based on the opinion of one expert.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    Information available on the app download page can be misleading for judging the app.

    “Therefore, users should be careful when using the information available on the app download page to judge the app, since this information can be misleading.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The number of downloads, user ratings, and reviews are valid indicators of an app's popularity.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Chan et al. suggest evaluating apps on three broad dimensions: usefulness, usability, and integration/infrastructure.

    “Chan et al. [16] suggest evaluating apps on three broad dimensions: usefulness, usability, and integration/infrastructure.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [16] S Chan, 2015, Towards a framework for evaluating mobile mental health apps, Telemed J E Health source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Lack of common constructs, outcome measures, definitions and/or standards for tracking, state induction, diagnostic/screening, and education apps make cross-case comparison of these different types of self-help apps impossible.

    “Finally, although it was not the primary goal of this review, the lack of common constructs, outcome measures, definitions and/or standards for tracking, state induction, diagnostic/screening, and education apps make cross-case comparison of these different types of self-help apps impossible.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Chan et al. proposed a framework for patients and health care providers to evaluate existing mental health mobile apps and help them make informed choices about their use.

    “Chan et al. [16] have recently proposed a framework that can be used for patients and health care providers to evaluate existing mental health mobile apps and help them make informed choices about their use.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [16] S Chan, 2015, Towards a framework for evaluating mobile mental health apps, Telemed J E Health source

      Not checked in the free run.

35 of 35
  • The paper relies on this without support.

    App store descriptions and manuscript descriptions accurately represent the type of support an app offers.

    “The app description displayed in the stores and any available description provided in the manuscript was the only information used by the reviewers to base their decisions on which category each app fell into.”
  • The paper relies on this without support.

    The development process, usability, feasibility, and efficacy of apps developed in the commercial marketplace are rarely assessed or reported.

    “however the development process, usability, feasibility, and efficacy of these apps developed in the commercial marketplace are rarely assessed or reported.”
  • The paper relies on this without support.

    The quality of available apps for depression had not been the subject of any systematic reviews before this review.

    “The quality of the available apps has not been the subject of any systematic reviews, until now.”
  • The paper relies on this without support.

    The search query 'depression' and the two app stores (Canadian Apple App Store and Android Market) capture the relevant available apps for depression.

    “The search was restricted to apps available through the two most popular mobile phone platforms, The Canadian Apple App Store and Android Market (Google Play). The search was made in November 2015 using ‘depression’ as the search query.”
  • The paper relies on this without support.

    Cross-referencing with apps identified in the scientific literature is sufficient to determine whether any efficacy or effectiveness study exists for the included CBT/BA apps.

    “To evaluate the effectiveness of the apps, we cross-referenced with apps identified in the scientific literature to see whether there was any efficacy or effectiveness study on apps included in the review.”
  • The paper relies on this without support.

    The expert's ratings of adherence to CBT/BA core ingredients are valid.

    “an experienced academic CBT clinician (SR) evaluated the apps for their level of fidelity to theoretical CBT and BA principles by exploring what extent the apps included the core ingredients of these models.”
  • The paper relies on this without support.

    The usability expert's ratings are valid.

    “a user experience designer (MW), who regulary performs expert reviews on mobile apps and websites, where he applies heuristics and professional experience to evaluate user interfaces and suggest design improvements, evaluated the usability of the apps.”
  • The paper relies on this without support.

    The number of downloads, user ratings, and reviews are valid indicators of an app's popularity.

    “Also, no relationship was found between level of adherence of the app to the theoretical models and the indicators of popularity (range = rs = -0.02, p = 0.96 and rs = 0.57, p = 0.18), or between level of adherence of the app with the heuristic usability with the indicators of popularity (range = rs = 0.15, p = 0.68 and rs = 0.59, p = 0.07).”
  • The paper relies on this without support.

    The core ingredients of CBT and BA used in the evaluation are the necessary components for a CBT or BA program to be effective.

    “Of those apps which do use CBT or BA, some apps may provide benefits by partially applying CBT or BA principles, but the majority do not come close to including the core ingredients of a CBT or BA program.”
  • The paper relies on this without support.

    The usability heuristics used are appropriate for evaluating the usability of CBT/BA apps.

    “The usability heuristic evaluation found that the median level of adherence with the heuristics was 83% (range = 42–98%).”
  • The paper relies on this without support.

    The evaluation of CBT/BA content by one expert is a valid measure of the apps' fidelity to CBT/BA models.

    “Second, the evaluation of the CBT and BA apps was based on the opinion of one expert.”
11 of 11

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • A meta-analysis of 117 CBT-based applications revealed that only 12 of them provided support aligned with the evidence-based tenets of CBT.

    “However, a meta-analysis of 117 CBT-based applications revealed that only 12 of them provided support aligned with the evidence-based tenets of CBT.46”

    From Mixed-methods feasibility outcomes for a novel ACT-based video game ‘ACTing Minds’ to support mental health (2024) · cites this paper as [46]

    The Abstract reports that 12 of 117 depression self-help apps seemed consistent with evidence-based CBT or BA principles. The Results (App characteristics) clarify that the 117 were not all CBT-based: only 12 were classified as offering CBT or BA. The source is a systematic review, not a meta-analysis, and its finding includes BA as well as CBT. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • Even among apps purporting to be drawn from evidence-based therapies such as cognitive behavioural therapy, only a small percentage actually contain the core principles of those therapeutic traditions.

    “Even among those purporting to be drawn from evidence-based therapies such as cognitive behavioural therapy, only a small percentage actually contain the core principles of those therapeutic traditions (19).”
  • This finding suggests that the observed effectiveness in earlier studies could potentially stem from participants' interaction with a DHI (perhaps as a form of distraction) rather than their proficient implementation of CBT principles.

    “This finding suggests that the observed effectiveness in earlier studies could potentially stem from participants’ interaction with a DHI (perhaps as a form of distraction) rather than their proficient implementation of CBT principles.”

    From Mixed-methods feasibility outcomes for a novel ACT-based video game ‘ACTing Minds’ to support mental health (2024) · cites this paper as [46]

    The Discussion (page unavailable) says the reviewed CBT/BA apps lacked published efficacy evidence, while the Introduction reports that earlier internet-delivered CBT/BA interventions were effective. Neither passage, nor the passages searched for distraction and engagement, addresses whether earlier benefits came from interacting with a digital intervention rather than applying CBT principles. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • Very few Internet-based cognitive-behavioral therapy products that claim to be based on cognitive-behavioral therapy actually contain the core elements of cognitive-behavioral therapy.

    “For iCBT, very few of the products that claim to be based on cognitive-behavioral therapy (CBT) actually contain the CBT core elements (56).”
  • In the past 5 years, a number of literature reviews have highlighted an increase in research and development activities for eMental healthcare technologies for children and adolescents.

    “In the past 5 years, a number of literature reviews have highlighted the increase in research and development activities for eMental healthcare technologies for children and adolescents [18-22].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Privacy-policy description conflicts with Table 7

    Minor

    The text says the Depression CBT Self-Help Guide policy does not address user control, while Table 7 marks its user-control category as addressed.

1 of 1

Cites

Flagged first, then by citations

2 of the 74 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. J.A. Callan, CBT mobilework: A technological solution to improve depression outcomes, Clinical and Translational Science, 4, 120
  2. M Murugan, Mobile phone based supportive patient care, Indian Journal of Psychiatry, 55, S72
  3. 2004, Depression: management of depression in primary and secondary care, Clinical Guideline, 23

Cited by

Sorted by citations

Authors
Huguet, A., Rao, S., McGrath, P. J., Wozney, L., Wheaton, M., Conrod, J., & Rozario, S.
Affiliations
  • Dalhousie University (CA)
  • Izaak Walton Killam Health Centre (CA)
Corresponding author
Huguet, Anna
Venue
PLOS ONE
Published
2016-05-02
Volume
11
Issue
5
Pages
e0154248
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2346033637
Cited by
328
References
74
Citations by year
2026: 10 · 2025: 16 · 2024: 26 · 2023: 31 · 2022: 38 · 2021: 44 · 2020: 53 · 2019: 40 · 2018: 34 · 2017: 30 · 2016: 6
FWCI
5.96
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Topics
  • Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
  • Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Keywords
depression, cognitive behavioral therapy, behavioral activation, mobile health apps, self-help apps, digital mental health, app usability
MeSH terms
Depression, Humans, Cognitive Behavioral Therapy, Cell Phone, Mobile Applications

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-09.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-09.

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