# 31 Pilates Studio vs osform

The clearest difference is update cadence: osform at daily against 31 Pilates Studio's every 4 months. 31 Pilates Studio's advantage is iOS requirement (15.1 vs 17.0). On price 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.

31 Pilates Studio ships an update every 4 months, osform daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | 31 Pilates Studio | osform |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 4 months | **Daily** |
| Size | 49 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Vasiliy Suvorov](https://appshunter.io/developer/1612668132) | [Oleg Shishkin](https://appshunter.io/developer/6788696343) |

## What reviewers say

### 31 Pilates Studio

[App page](https://appshunter.io/ios/app/31-pilates-studio/id6759158199)

**In-app purchases:** none


### osform

[App page](https://appshunter.io/ios/app/osform/id6820720962)

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

**In-app purchases:** none


## Frequently asked questions

### Is 31 Pilates Studio free?

31 Pilates Studio is free to download, with no in-app purchases.

### Is osform free?

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

### Which is updated more often, 31 Pilates Studio or osform?

31 Pilates Studio ships an update every 4 months, and osform daily. Most recently, 31 Pilates Studio was updated on October 31, 2026 and osform 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.*