# MuscleLab vs PTKit

The clearest difference is in-app purchases: MuscleLab at none against PTKit's 3. PTKit's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PTKit sells 3 in-app purchases, starting at $19.99 per month. MuscleLab asks for nothing beyond the download.

MuscleLab ships an update weekly, PTKit every 3 days. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | MuscleLab | PTKit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 30 MB | 47 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Ilya Valasiuk](https://appshunter.io/developer/1861559036) | [Dean Mcdonald](https://appshunter.io/developer/1887363408) |

## What reviewers say

### MuscleLab

[App page](https://appshunter.io/ios/app/musclelab/id6756586925)

**Features:** macOS Compatibility

**In-app purchases:** none


### PTKit

[App page](https://appshunter.io/ios/app/ptkit/id6761026550)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PTKit Silver Monthly | $19.99 | per month |
| PTKit Gold Monthly | $29.99 | per month |
| PTKit Gold Annual | $284.99 | per year |


## Frequently asked questions

### Is MuscleLab free?

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

### Is PTKit free?

PTKit is free to download, with in-app purchases available.

### Do MuscleLab or PTKit have ads?

Neither MuscleLab nor PTKit shows ads.

### Which is updated more often, MuscleLab or PTKit?

MuscleLab ships an update weekly, and PTKit every 3 days. Most recently, MuscleLab was updated on October 5, 2026 and PTKit on September 30, 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.*