# RSP App vs CHASKi.fit

The clearest difference is iOS requirement: RSP App at 13.0 against CHASKi.fit's 16.0. 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RSP App | CHASKi.fit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 23 MB | 28 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Inercial Performance Sl.](https://appshunter.io/developer/1554126019) | [IC Innovations](https://appshunter.io/developer/1645338081) |

## What reviewers say

### RSP App

[App page](https://appshunter.io/ios/app/rsp-app/id1623553151)

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

**In-app purchases:** none


### CHASKi.fit

[App page](https://appshunter.io/ios/app/chaskifit/id1645338079)

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

**In-app purchases:** none


## Frequently asked questions

### Is RSP App free?

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

### Is CHASKi.fit free?

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

### Do RSP App or CHASKi.fit have ads?

Neither RSP App nor CHASKi.fit shows ads.

### Which is updated more often, RSP App or CHASKi.fit?

RSP App ships an update every 2 months, and CHASKi.fit every 2 months. Most recently, RSP App was updated on September 26, 2026 and CHASKi.fit on September 19, 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.*