# Proving Ground vs MutLab

The clearest difference is update cadence: Proving Ground at monthly against MutLab's every 2 months. MutLab's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, 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.

Proving Ground ships an update monthly, MutLab every 2 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Proving Ground | MutLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (199 ratings)](https://appshunter.io/ios/app/proving-ground/id1530592082/reviews)** | — |
| Number of ratings | **199** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 60 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Proving Ground Limited Liability Corporation](https://appshunter.io/developer/1530592084) | [Mutlab](https://appshunter.io/developer/1363984051) |

## What reviewers say

### Proving Ground

[App page](https://appshunter.io/ios/app/proving-ground/id1530592082)

Book and manage your training classes at a functional fitness studio. View schedules, reserve spots in group sessions, and purchase class packages directly from your device. Focus on smart training with mobility and recovery integrated into every workout.

**Highlights:** View class schedules, Book group classes, Purchase class packages, Functional training, Mobility and recovery focus

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

**In-app purchases:** none


### MutLab

[App page](https://appshunter.io/ios/app/mutlab/id1576343740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Proving Ground free?

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

### Is MutLab free?

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

### Do Proving Ground or MutLab have ads?

Neither Proving Ground nor MutLab shows ads.

### Which is updated more often, Proving Ground or MutLab?

Proving Ground ships an update monthly, and MutLab every 2 months. Most recently, Proving Ground was updated on September 22, 2026 and MutLab on September 21, 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.*