# GTD Brain vs Relay GTD

The clearest difference is in-app purchases: GTD Brain at none against Relay GTD's 2. Relay GTD's advantage is device support (4 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Relay GTD sells 2 in-app purchases, starting at $7.00 per month. GTD Brain asks for nothing beyond the download.

GTD Brain ships an update weekly, Relay GTD every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | GTD Brain | Relay GTD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 13 MB | 67 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Minosin AB](https://appshunter.io/developer/6786407496) | [Michael Fraser Buffini](https://appshunter.io/developer/6807514536) |

## What reviewers say

### GTD Brain

[App page](https://appshunter.io/ios/app/gtd-brain/id6786407494)

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

**In-app purchases:** none


### Relay GTD

[App page](https://appshunter.io/ios/app/relay-gtd/id6807514534)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Relay Monthly | $7.00 | per month |
| Relay Yearly | $50.00 | per year |


## Frequently asked questions

### Is GTD Brain free?

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

### Is Relay GTD free?

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

### Do GTD Brain or Relay GTD have ads?

Neither GTD Brain nor Relay GTD shows ads.

### Which is updated more often, GTD Brain or Relay GTD?

GTD Brain ships an update weekly, and Relay GTD every 4 days. Most recently, GTD Brain was updated on October 31, 2026 and Relay GTD on October 31, 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.*