# BiAffect3 vs OCD Tracker Journal

The clearest difference is rating: BiAffect3 at 5.0 against OCD Tracker Journal's 3.7. BiAffect3 also leads on in-app purchases (none vs 17). OCD Tracker Journal's advantage is device support (4 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. OCD Tracker Journal sells 17 in-app purchases, starting at $4.95 per month. BiAffect3 asks for nothing beyond the download.

BiAffect3 holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 6 and 3 respectively.

BiAffect3 ships an update every 4 months, OCD Tracker Journal every 6 months. The most recent releases landed on June 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | BiAffect3 | OCD Tracker Journal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/biaffect3/id6451423106/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/ocd-tracker-journal/id6743565010/reviews) |
| Number of ratings | **6** | 3 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 220 MB |
| Requires iOS | 16.1 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [University of Illinois at Urbana-Champaign](https://appshunter.io/developer/422670617) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### BiAffect3

[App page](https://appshunter.io/ios/app/biaffect3/id6451423106)

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

**In-app purchases:** none


### OCD Tracker Journal

[App page](https://appshunter.io/ios/app/ocd-tracker-journal/id6743565010)

This app helps individuals manage Obsessive-Compulsive Disorder by tracking intrusive thoughts, compulsions, and anxiety. It provides tools to log symptoms, build exposure response prevention (ERP) goals, and understand triggers for better insight and progress tracking.

**Highlights:** Log obsessions and unwanted thoughts, Track compulsions and rituals, Build and track ERP goals, Identify internal and external triggers, Monitor mood, energy, and function, Review progress with charts, Export logs for therapy

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite Monthly | $4.95 | per month |
| easy pass | $7.99 | per 7 days |
| weather max | $9.99 | per 3 months |
| flex pass | $18.99 | per month |
| carey ai max | $19.99 | per month |
| Lite Yearly | $19.99 | per year |
| smart pass | $19.99 | per year |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| limited discount | $29.99 | per year |
| Premium Yearly | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $39.99 | per year |
| 7-Day Trial | $49.99 | per year |
| store credit | $1.99 | one-time |
| carey ai credits | $8.99 | one-time |
| lifetime upgrade | $79.99 | one-time |


## Frequently asked questions

### Is BiAffect3 free?

BiAffect3 is free to download, with no in-app purchases.

### Is OCD Tracker Journal free?

OCD Tracker Journal is free to download, with in-app purchases available.

### Which has better reviews, BiAffect3 or OCD Tracker Journal?

BiAffect3 is rated higher. BiAffect3 averages 5.0 out of 5 from 6 ratings, while OCD Tracker Journal averages 3.7 from 3 ratings.

### Do BiAffect3 or OCD Tracker Journal have ads?

Neither BiAffect3 nor OCD Tracker Journal shows ads.

### Which is updated more often, BiAffect3 or OCD Tracker Journal?

BiAffect3 ships an update every 4 months, and OCD Tracker Journal every 6 months. Most recently, BiAffect3 was updated on June 4, 2026 and OCD Tracker Journal on September 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*