# PS SelfCheck vs C.O.S. AristaApp

The clearest difference is update cadence: C.O.S. AristaApp at every 2 weeks against PS SelfCheck's every 2 months. PS SelfCheck's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

PS SelfCheck ships an update every 2 months, C.O.S. AristaApp every 2 weeks. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | PS SelfCheck | C.O.S. AristaApp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 211 MB | 37 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PS Team Deutschland GmbH & Co. KG](https://appshunter.io/developer/1440302216) | [C.O.S. Software GmbH](https://appshunter.io/developer/560073564) |

## What reviewers say

### PS SelfCheck

[App page](https://appshunter.io/ios/app/ps-selfcheck/id1452873076)

**In-app purchases:** none


### C.O.S. AristaApp

[App page](https://appshunter.io/ios/app/cos-aristaapp/id1598868944)

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

**In-app purchases:** none


## Frequently asked questions

### Is PS SelfCheck free?

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

### Is C.O.S. AristaApp free?

C.O.S. AristaApp is free to download, with no in-app purchases.

### Do PS SelfCheck or C.O.S. AristaApp have ads?

Neither PS SelfCheck nor C.O.S. AristaApp shows ads.

### Which is updated more often, PS SelfCheck or C.O.S. AristaApp?

PS SelfCheck ships an update every 2 months, and C.O.S. AristaApp every 2 weeks. Most recently, PS SelfCheck was updated on October 12, 2026 and C.O.S. AristaApp on October 20, 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.*