# FITSI Gym vs PRISM4 app

The clearest difference is update cadence: PRISM4 app at daily against FITSI Gym's fortnightly. PRISM4 app also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FITSI Gym ships an update fortnightly, PRISM4 app daily. The most recent releases landed on October 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | FITSI Gym | PRISM4 app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Size | 194 MB | 38 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iNTELINOVA SOFTWARE SOCIEDAD LIMITADA](https://appshunter.io/developer/598249675) | [Carlos Sanchez](https://appshunter.io/developer/6794353457) |

## What reviewers say

### FITSI Gym

[App page](https://appshunter.io/ios/app/fitsi-gym/id6763243446)

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

**In-app purchases:** none


### PRISM4 app

[App page](https://appshunter.io/ios/app/prism4-app/id6794353455)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FITSI Gym free?

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

### Is PRISM4 app free?

PRISM4 app is free to download, with no in-app purchases.

### Do FITSI Gym or PRISM4 app have ads?

Neither FITSI Gym nor PRISM4 app shows ads.

### Which is updated more often, FITSI Gym or PRISM4 app?

FITSI Gym ships an update fortnightly, and PRISM4 app daily. Most recently, FITSI Gym was updated on October 9, 2026 and PRISM4 app on September 27, 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.*