Comparison

RePS Study vs BiAffect3

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RePS Study

This mobile program guides users through an eight-week self-help training to reduce posttraumatic stress symptoms. It involves daily engagement for 17 days, tracking behaviors, moods, and experiences, with follow-up measures administered through the app.

Highlights
  • Eight-week self-help training
  • Daily behavior tracking
  • Mood monitoring
  • Experience logging
  • Follow-up measures
Features
Read full description

RePS is a mobile self-help training program that aims to reduce posttraumatic stress symptoms. Over the course of eight weeks, participants are asked to engage with the mobile app daily for 17 days of training and tracking of behaviors, moods, and experiences and complete follow-up measures via the app.

About

BiAffect3

This app helps you track your mood and cognitive function using your iPhone's keyboard and sensor data. It analyzes typing patterns to provide insights into mental health and assists researchers in developing better diagnostic tools for mood disorders.

Highlights
  • Mood tracking
  • Neurocognitive functioning assessment
  • Keystroke dynamics analysis
  • Sensor data collection
  • Mental health insights
  • Research participation
Read full description

BiAffect3 is the new and improved version of our award-winning BiAffect app, part of a multi-year mood-tracking research project developed by researchers at the University of Illinois at Chicago and funded by the National Institute of Mental Health. BiAffect3 • Track your mood and neurocognitive functioning with your iPhone. • Use keystroke dynamics and sensor data to gain insights into your mental health. • Help researchers develop new tools to improve the diagnosis and treatment of mood disorders. How does it work? BiAffect3 uses a custom-built virtual smartphone keyboard to collect keystroke metadata—such as typing speed, errors, and pauses—but not typed content in order to preserve user privacy. This data is then analyzed using machine learning algorithms and other statistical techniques to identify patterns that are associated with different mood states. Who is BiAffect3 for? BiAffect3 is for anyone who is interested in tracking their mood and neurocognitive functioning. The app is particularly useful for people with mood disorders as it can help them to identify early warning signs of an episode and take steps to prevent it, but it can be used by anyone who wants to learn more about their individual emotional and thought patterns. How do I get started? To get started with BiAffect3, simply download the app and create an account. The app will then guide you through the setup process. How can I help? By participating in the BiAffect3 study, you can help researchers develop new tools to improve the diagnosis and treatment of bipolar disorder. Your participation is voluntary and confidential. Download BiAffect3 today and start tracking your mood and neurocognitive functioning.

Screenshots

RePS Study4 screens
BiAffect33 screens

Verdict

The call

The clearest difference is rating: BiAffect3 at 5.0 against RePS Study's 1.7. On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BiAffect3 holds the better App Store score, 5.0 against 1.7. Both are backed by a comparable volume of ratings — 13 and 6 respectively.

UpkeepUpdate frequency

RePS Study ships an update every 3 months, BiAffect3 every 4 months. The most recent releases landed on July 23, 2026 and June 4, 2026 respectively.

Scorecard1 real difference · 9 level
RePS Study versus BiAffect3: the parameters behind the verdict, then further details
ParameterRePS StudyBiAffect3
PriceFreeFree
Rating1.7 (13 ratings)5.0 (6 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings13 — better6
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.1
Further details — not scored
Size24 MB30 MB
Age rating12+17+
DeveloperNEUROSCAPE ALLIANCEUniversity of Illinois at Urbana-Champaign

Customer experience

RePS Study

All ratings13 ratings
Positive15.4%
Neutral7.7%
Negative76.9%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

BiAffect3

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RePS Study

No in-app purchases

None

BiAffect3

No in-app purchases

Questions

Is RePS Study free?
RePS Study is free to download, with no in-app purchases.
Is BiAffect3 free?
BiAffect3 is free to download, with no in-app purchases.
Which has better reviews, RePS Study or BiAffect3?
BiAffect3 is rated higher. RePS Study averages 1.7 out of 5 from 13 ratings, while BiAffect3 averages 5.0 from 6 ratings.
Do RePS Study or BiAffect3 have ads?
Neither RePS Study nor BiAffect3 shows ads.
Which is updated more often, RePS Study or BiAffect3?
RePS Study ships an update every 3 months, and BiAffect3 every 4 months. Most recently, RePS Study was updated on July 23, 2026 and BiAffect3 on June 4, 2026.

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