# Training App (MyStrengthBook) vs JuggernautAI

The clearest difference is review sentiment: JuggernautAI at 73% against Training App (MyStrengthBook)'s 27%. JuggernautAI also leads on rating (4.8 vs 3.5) and ratings volume (5.7K vs 50). Training App (MyStrengthBook)'s advantage is in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. JuggernautAI sells 1 in-app purchase, starting at $34.99 per month. Training App (MyStrengthBook) asks for nothing beyond the download.

JuggernautAI holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: JuggernautAI has 5.7K ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 27% of Training App (MyStrengthBook)'s written reviews are positive against 73% of JuggernautAI's.

Training App (MyStrengthBook) ships an update every 5 days, JuggernautAI every 4 days. Both last shipped on November 11, 2026.

## The numbers

| Metric | Training App (MyStrengthBook) | JuggernautAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (50 ratings)](https://appshunter.io/ios/app/training-app-mystrengthbook/id1337179045/reviews) | **[4.8 (5.7K ratings)](https://appshunter.io/ios/app/juggernautai/id1515756471/reviews)** |
| Number of ratings | 50 | **5.7K** |
| Positive reviews | 27.3% of reviews | **72.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | **Free** | Subscription |
| Size | 92 MB | 108 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [My Strength Book Inc](https://appshunter.io/developer/1337179044) | [Juggernaut Apps](https://appshunter.io/developer/1627775482) |

## What reviewers say

### Training App (MyStrengthBook)

[App page](https://appshunter.io/ios/app/training-app-mystrengthbook/id1337179045)

This app helps optimize fitness by connecting users with coaches for personalized training programs. It provides guidance on weight selection, allows video sharing for feedback, and tracks workout progress and metrics. Users can also access exercise demos and sync data with HealthKit.

**Highlights:** Personalized training programs from coaches, Weight selection guidance (%1RM / RPE), Video upload for coach feedback, Workout results and metric tracking, Exercise demo videos, HealthKit integration

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

**In-app purchases:** none


### JuggernautAI

[App page](https://appshunter.io/ios/app/juggernautai/id1515756471)

This app uses AI to create personalized strength training programs for powerlifting and powerbuilding. It adapts to your feedback and goals, optimizing volume, frequency, and exercise selection for maximum strength gains and recovery.

**Highlights:** AI-generated personalized workout plans, Powerlifting and Powerbuilding goal focus, Adaptive training based on real-time feedback, Optimized training frequency and volume, Exercise selection for weak points, Periodization strategy for fatigue management

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JuggernautAI Monthly | $34.99 | per month |

**What reviewers like**

- 🚀 Excellent programming and customization
- 👍 Detailed and user-friendly app
- 🔍 Adjusts based on user feedback
- 📈 Helps users achieve their goals
- 💪 Effective for building strength and muscle

**What reviewers complain about**

- 💰 Expensive monthly subscription
- 🔒 Paywall restricts access to full app
- 🕰️ Excessive time required for workouts
- 🐛 Occasional bugs and glitches

**Reported bugs**

- Clearing of workout history after each block
- Issues with the auto-timer feature
- Problems with selecting dates and times during setup

**Requested features**

- Integration with Apple Health or other fitness apps
- More flexibility in scheduling and workout days
- Improved exercise library and replacement options
- Better tracking and history of past workouts


## Frequently asked questions

### Is Training App (MyStrengthBook) free?

Training App (MyStrengthBook) is free to download, with no in-app purchases.

### Is JuggernautAI free?

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

### Which has better reviews, Training App (MyStrengthBook) or JuggernautAI?

JuggernautAI is rated higher. Training App (MyStrengthBook) averages 3.5 out of 5 from 50 ratings, while JuggernautAI averages 4.8 from 5.7K ratings.

### Do Training App (MyStrengthBook) or JuggernautAI have ads?

Neither Training App (MyStrengthBook) nor JuggernautAI shows ads.

### Which is updated more often, Training App (MyStrengthBook) or JuggernautAI?

Training App (MyStrengthBook) ships an update every 5 days, and JuggernautAI every 4 days. Most recently, Training App (MyStrengthBook) was updated on November 11, 2026 and JuggernautAI on November 11, 2026.

---

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