# Dynamic Strength vs Unbreakable by Dr. John Rusin

The clearest difference is rating: Dynamic Strength at 4.2 against Unbreakable by Dr. John Rusin's 3.4. Dynamic Strength also leads on update cadence (every 3 weeks vs every 6 months) and ratings volume (39 vs 12). Unbreakable by Dr. John Rusin's advantage is monetization model (free vs freemium). On price, review sentiment, 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.

Dynamic Strength holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 39 and 12 respectively. Written reviews point the same way: 73% of Dynamic Strength's written reviews are positive against 67% of Unbreakable by Dr. John Rusin's.

Dynamic Strength ships an update every 3 weeks, Unbreakable by Dr. John Rusin every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Dynamic Strength | Unbreakable by Dr. John Rusin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (39 ratings)](https://appshunter.io/ios/app/dynamic-strength/id6447540805/reviews)** | [3.4 (12 ratings)](https://appshunter.io/ios/app/unbreakable-by-dr-john-rusin/id6744409487/reviews) |
| Number of ratings | **39** | 12 |
| Positive reviews | **72.7% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Freemium | **Free** |
| Size | 427 MB | 41 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Redefining Strength LLC](https://appshunter.io/developer/1299593169) | [John Rusin](https://appshunter.io/developer/1807540567) |

## What reviewers say

### Dynamic Strength

[App page](https://appshunter.io/ios/app/dynamic-strength/id6447540805)

This app offers personalized training programs that adapt to your fitness level and goals. It includes expert coaching, progress tracking, and integrates with health apps to provide insights into your performance. Beyond workouts, it also supports nutrition and lifestyle habit tracking for a holistic approach to health.

**Highlights:** Adaptive training programs, Expert coaching, Progress tracking, Health app integration, Nutrition tracking, Lifestyle habit tracking, Community support

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

**In-app purchases:** none


### Unbreakable by Dr. John Rusin

[App page](https://appshunter.io/ios/app/unbreakable-by-dr-john-rusin/id6744409487)

This app helps you train smarter and feel better with a pain-free performance system. Log workouts, track progress, and access expert coaching and exclusive resources to achieve your fitness goals without setbacks.

**Highlights:** Pain-Free Performance Training system, Track progress and view workouts, Expert coaching on demand, Exclusive training resources, Community discussion boards, Exercise library with tutorials, Flexible training schedules

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

**In-app purchases:** none


## Frequently asked questions

### Is Dynamic Strength free?

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

### Is Unbreakable by Dr. John Rusin free?

Unbreakable by Dr. John Rusin is free to download, with no in-app purchases.

### Which has better reviews, Dynamic Strength or Unbreakable by Dr. John Rusin?

Dynamic Strength is rated higher. Dynamic Strength averages 4.2 out of 5 from 39 ratings, while Unbreakable by Dr. John Rusin averages 3.4 from 12 ratings.

### Do Dynamic Strength or Unbreakable by Dr. John Rusin have ads?

Neither Dynamic Strength nor Unbreakable by Dr. John Rusin shows ads.

### Which is updated more often, Dynamic Strength or Unbreakable by Dr. John Rusin?

Dynamic Strength ships an update every 3 weeks, and Unbreakable by Dr. John Rusin every 6 months. Most recently, Dynamic Strength was updated on October 24, 2026 and Unbreakable by Dr. John Rusin on October 24, 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.*