# OS vs TRI STUDIO

The clearest difference is update cadence: OS at every 3 months against TRI STUDIO's every 15 months. OS also leads on iOS requirement (13.5 vs 15.1). 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.

OS ships an update every 3 months, TRI STUDIO every 15 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OS | TRI STUDIO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 15 months |
| Size | 14 MB | 48 MB |
| Requires iOS | **13.5** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OS ONE FITNESS LLC](https://appshunter.io/developer/1784209502) | [Arbox LTD](https://appshunter.io/developer/1021244486) |

## What reviewers say

### OS

[App page](https://appshunter.io/ios/app/os-1-gym/id6739205187)

**Features:** macOS Compatibility

**In-app purchases:** none


### TRI STUDIO

[App page](https://appshunter.io/ios/app/tri-studio/id6741479250)

**In-app purchases:** none


## Frequently asked questions

### Is OS free?

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

### Is TRI STUDIO free?

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

### Do OS or TRI STUDIO have ads?

Neither OS nor TRI STUDIO shows ads.

### Which is updated more often, OS or TRI STUDIO?

OS ships an update every 3 months, and TRI STUDIO every 15 months. Most recently, OS was updated on November 4, 2026 and TRI STUDIO on October 30, 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.*