# DR vs Thinking Casebook

The clearest difference is device support: Thinking Casebook at 3 against DR's 1. Thinking Casebook also leads on iOS requirement (13.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | DR | Thinking Casebook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 12 MB | 19 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Rutz Bildungsloesungen GmbH](https://appshunter.io/developer/708314115) | [Trung Anh Ha Ngoc](https://appshunter.io/developer/1866513269) |

## What reviewers say

### DR

[App page](https://appshunter.io/ios/app/dr-annotate/id868029762)

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

**In-app purchases:** none


### Thinking Casebook

[App page](https://appshunter.io/ios/app/thinking-casebook/id6757381938)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DR free?

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

### Is Thinking Casebook free?

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

### Do DR or Thinking Casebook have ads?

Neither DR nor Thinking Casebook shows ads.

---

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