# NotTodo vs Atteno

The clearest difference is in-app purchases: NotTodo at none against Atteno's 1. Atteno's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Atteno sells 1 one-off in-app purchase. NotTodo asks for nothing beyond the download.

## The numbers

| Metric | NotTodo | Atteno |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 weeks |
| Size | 1 MB | 35 MB |
| Requires iOS | 17.2 | **16.1** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Friedrich Wilms](https://appshunter.io/developer/1727205864) | [子文 杨](https://appshunter.io/developer/1804228519) |

## What reviewers say

### NotTodo

[App page](https://appshunter.io/ios/app/nottodo/id6476575959)

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

**In-app purchases:** none


### Atteno

[App page](https://appshunter.io/ios/app/atteno-focus-timer-and-study/id6757382433)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atteno Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is NotTodo free?

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

### Is Atteno free?

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

### Do NotTodo or Atteno have ads?

Neither NotTodo nor Atteno shows ads.

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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.*