# ATU vs storiiz

The clearest difference is iOS requirement: ATU at 13.0 against storiiz's 15.6. On price, update cadence, 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.

ATU ships an update every 37 months, storiiz every 21 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ATU | storiiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 21 months** |
| Size | 3 MB | 2 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [ryusuke yoshioka](https://appshunter.io/developer/6823044321) |

## What reviewers say

### ATU

[App page](https://appshunter.io/ios/app/atu/id1253349167)

**Features:** macOS Compatibility

**In-app purchases:** none


### storiiz

[App page](https://appshunter.io/ios/app/storiiz/id1497254054)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ATU free?

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

### Is storiiz free?

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

### Do ATU or storiiz have ads?

Neither ATU nor storiiz shows ads.

### Which is updated more often, ATU or storiiz?

ATU ships an update every 37 months, and storiiz every 21 months. Most recently, ATU was updated on November 2, 2026 and storiiz on November 3, 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.*