# RAD Study vs Thoughtline

The clearest difference is in-app purchases: RAD Study at none against Thoughtline's 3. RAD Study also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Thoughtline sells 3 in-app purchases, starting at $9.99 per month. RAD Study asks for nothing beyond the download.

RAD Study ships an update every 3 weeks, Thoughtline every 9 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | RAD Study | Thoughtline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 51 MB | 24 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Avicenna Research Inc.](https://appshunter.io/developer/1137173051) | [SITKI TUGRUL YUKSEL](https://appshunter.io/developer/6784825537) |

## What reviewers say

### RAD Study

[App page](https://appshunter.io/ios/app/rad-study/id6445949197)

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

**In-app purchases:** none


### Thoughtline

[App page](https://appshunter.io/ios/app/thoughtline-cbt-thought-diary/id6815751415)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thoughtline Pro · Monthly | $9.99 | per month |
| Thoughtline Pro · Yearly | $39.99 | per year |
| Thoughtline Pro · Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is RAD Study free?

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

### Is Thoughtline free?

Thoughtline is free to download, with in-app purchases available.

### Do RAD Study or Thoughtline have ads?

Neither RAD Study nor Thoughtline shows ads.

### Which is updated more often, RAD Study or Thoughtline?

RAD Study ships an update every 3 weeks, and Thoughtline every 9 days. Most recently, RAD Study was updated on November 3, 2026 and Thoughtline on November 6, 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.*