# Muscle & Motion vs Courage First

The clearest difference is in-app purchases: Courage First at none against Muscle & Motion's 4. Courage First also leads on update cadence (every 8 days vs monthly) and iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Muscle & Motion sells 3 in-app purchases, starting at $15.00 per month. Courage First asks for nothing beyond the download.

Muscle & Motion ships an update monthly, Courage First every 8 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Muscle & Motion | Courage First |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (681 ratings)](https://appshunter.io/ios/app/muscle-and-motion-posture/id1199500066/reviews)** | — |
| Number of ratings | **681** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Freemium | — |
| Size | 193 MB | 52 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Muscle & Motion LTD](https://appshunter.io/developer/1110670112) | [AJIT DAMODARAN](https://appshunter.io/developer/6777667411) |

## What reviewers say

### Muscle & Motion

[App page](https://appshunter.io/ios/app/muscle-and-motion-posture/id1199500066)

Explore the anatomy and biomechanics of posture with interactive 3D models. Understand muscular patterns, identify common faults, and learn corrective exercises to improve alignment and reduce pain. Ideal for professionals and individuals seeking to enhance their understanding of human movement.

**Highlights:** 3D Postural Analysis Library, Corrective Exercise Library, Biomechanical Principles Visualization, Muscle Activation in 3D, Identification of Postural Faults, Client/Patient Education Tools

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Full Access | $15.00 | per month |
| Yearly Full Access | $89.00 | per year |
| Yearly Subscription Bonus | $89.00 | per year |

**What reviewers like**

- 🚀 Animated anatomy magic
- 👍 Very educational
- 👍 Great body of work
- 👍 Brilliant and very helpful
- 👍 Fabulous and makes you better

**What reviewers complain about**

- 🐛 Doesn't work on iOS 18.3
- 💰 Very expensive

**Reported bugs**

- Paid subscription not working, only free version available
- Login issues

**Requested features**

- Add Russian language
- Add Spanish language


### Courage First

[App page](https://appshunter.io/ios/app/courage-first/id6785327166)

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

**In-app purchases:** none


## Frequently asked questions

### Is Muscle & Motion free?

Muscle & Motion is free to download, with in-app purchases available.

### Is Courage First free?

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

### Do Muscle & Motion or Courage First have ads?

Neither Muscle & Motion nor Courage First shows ads.

### Which is updated more often, Muscle & Motion or Courage First?

Muscle & Motion ships an update monthly, and Courage First every 8 days. Most recently, Muscle & Motion was updated on November 6, 2026 and Courage First on October 31, 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.*