# RSP App vs Skalen

The clearest difference is update cadence: Skalen at every 10 days against RSP App's every 2 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.

RSP App ships an update every 2 months, Skalen every 10 days. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RSP App | Skalen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 23 MB | 43 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Inercial Performance Sl.](https://appshunter.io/developer/1554126019) | [Nicolas Sibello Litran](https://appshunter.io/developer/6784697944) |

## 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


### Skalen

[App page](https://appshunter.io/ios/app/skalen/id6784697942)

**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 Skalen free?

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

### Do RSP App or Skalen have ads?

Neither RSP App nor Skalen shows ads.

### Which is updated more often, RSP App or Skalen?

RSP App ships an update every 2 months, and Skalen every 10 days. Most recently, RSP App was updated on November 7, 2026 and Skalen on October 28, 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.*