# QuadraFocus vs Tudu

The clearest difference is in-app purchases: Tudu at none against QuadraFocus's 2. Tudu also leads on iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. QuadraFocus sells 2 in-app purchases, starting at $2.99 per month. Tudu asks for nothing beyond the download.

## The numbers

| Metric | QuadraFocus | Tudu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 18 MB | 55 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Estee](https://appshunter.io/developer/1470582372) | [Volkan Azimob](https://appshunter.io/developer/6811557080) |

## What reviewers say

### QuadraFocus

[App page](https://appshunter.io/ios/app/quadrafocus/id6739864718)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $2.99 | per month |
| Pro (Yearly) | $29.99 | per year |


### Tudu

[App page](https://appshunter.io/ios/app/tudu-adhd-planner-brain-dump/id6812444746)

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

**In-app purchases:** none


## Frequently asked questions

### Is QuadraFocus free?

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

### Is Tudu free?

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

### Do QuadraFocus or Tudu have ads?

Neither QuadraFocus nor Tudu 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.*