# Chronic Pain Tracker & Diary vs Behavioral Experiment

The clearest difference is in-app purchases: Behavioral Experiment at none against Chronic Pain Tracker & Diary's 3. Behavioral Experiment also leads on update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Chronic Pain Tracker & Diary sells 3 in-app purchases, starting at $4.99 per 7 days. Behavioral Experiment asks for nothing beyond the download.

Chronic Pain Tracker & Diary ships an update every 4 months, Behavioral Experiment every 3 weeks. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chronic Pain Tracker & Diary | Behavioral Experiment |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 4 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [Everyday Insight LLC](https://appshunter.io/developer/6775709399) |

## What reviewers say

### Chronic Pain Tracker & Diary

[App page](https://appshunter.io/ios/app/chronic-pain-tracker-and-diary/id6772260468)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Symptom Journal Weekly | $4.99 | per 7 days |
| Flare Record Yearly | $24.99 | per year |
| Joint Log Lifetime | $49.99 | one-time |


### Behavioral Experiment

[App page](https://appshunter.io/ios/app/behavioral-experiment/id6810320894)

**In-app purchases:** none


## Frequently asked questions

### Is Chronic Pain Tracker & Diary free?

Chronic Pain Tracker & Diary is free to download, with in-app purchases available.

### Is Behavioral Experiment free?

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

### Do Chronic Pain Tracker & Diary or Behavioral Experiment have ads?

Neither Chronic Pain Tracker & Diary nor Behavioral Experiment shows ads.

### Which is updated more often, Chronic Pain Tracker & Diary or Behavioral Experiment?

Chronic Pain Tracker & Diary ships an update every 4 months, and Behavioral Experiment every 3 weeks. Most recently, Chronic Pain Tracker & Diary was updated on October 19, 2026 and Behavioral Experiment on October 11, 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.*