# Rotor vs KosmoFIT

The clearest difference is update cadence: Rotor at every 3 months against KosmoFIT's every 36 months. 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.

Rotor ships an update every 3 months, KosmoFIT every 36 months. The most recent releases landed on October 30, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Rotor | KosmoFIT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 36 months |
| Size | 23 MB | 23 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mikhail Gusev](https://appshunter.io/developer/1564573299) | [Lev Ovanoglyan](https://appshunter.io/developer/1693327922) |

## What reviewers say

### Rotor

[App page](https://appshunter.io/ios/app/rotor-n/id1564573297)

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

**In-app purchases:** none


### KosmoFIT

[App page](https://appshunter.io/ios/app/kosmofit/id6469628458)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rotor free?

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

### Is KosmoFIT free?

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

### Do Rotor or KosmoFIT have ads?

Neither Rotor nor KosmoFIT shows ads.

### Which is updated more often, Rotor or KosmoFIT?

Rotor ships an update every 3 months, and KosmoFIT every 36 months. Most recently, Rotor was updated on October 30, 2026 and KosmoFIT on November 12, 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.*