# Praxis Motion Lab vs Momentum Exercise Tracker

The clearest difference is in-app purchases: Momentum Exercise Tracker at none against Praxis Motion Lab's 7. Momentum Exercise Tracker also leads on update cadence (every 4 days vs monthly) and iOS requirement (15.1 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Praxis Motion Lab sells 7 in-app purchases, starting at $9.99 per month. Momentum Exercise Tracker asks for nothing beyond the download.

Praxis Motion Lab ships an update monthly, Momentum Exercise Tracker every 4 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Praxis Motion Lab | Momentum Exercise Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 63 MB | 33 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Miyamoto Process & Performance Consulting OU](https://appshunter.io/developer/939512412) | [Curtis Schatza](https://appshunter.io/developer/1880583855) |

## What reviewers say

### Praxis Motion Lab

[App page](https://appshunter.io/ios/app/praxis-motion-lab/id6786566020)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Praxis Pro (Monthly) | $9.99 | per month |
| Praxis Clinical (Monthly) | $59.99 | per month |
| Praxis Pro (Annual) | $99.99 | per year |
| 20 Analysis Credits | $4.99 | one-time |
| 60 Analysis Credits | $12.99 | one-time |
| 150 Analysis Credits | $27.99 | one-time |
| 400 Analysis Credits | $59.99 | one-time |


### Momentum Exercise Tracker

[App page](https://appshunter.io/ios/app/momentum-exercise-tracker/id6800469617)

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

**In-app purchases:** none


## Frequently asked questions

### Is Praxis Motion Lab free?

Praxis Motion Lab is free to download, with in-app purchases available.

### Is Momentum Exercise Tracker free?

Momentum Exercise Tracker is free to download, with no in-app purchases.

### Do Praxis Motion Lab or Momentum Exercise Tracker have ads?

Neither Praxis Motion Lab nor Momentum Exercise Tracker shows ads.

### Which is updated more often, Praxis Motion Lab or Momentum Exercise Tracker?

Praxis Motion Lab ships an update monthly, and Momentum Exercise Tracker every 4 days. Most recently, Praxis Motion Lab was updated on October 6, 2026 and Momentum Exercise Tracker on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*