Comparison

Training App (MyStrengthBook) vs JuggernautAI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Training App (MyStrengthBook)

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
Read full description

Optimize your fitness outcomes using the most complete Training App in the world. 1) Connect with your coach on PULL by MyStrengthBook If your coach uses the MyStrengthBook coaching platform, they can deliver your training programs through the mobile app. You need to be invited to their account to gain access to the app with this product. 2) Subscribe to a Training App from a coach using PUSH by MyStrengthBook By visiting any of our partner's marketing sites you can subscribe to their training app and gain unlimited access to their training programs and community of lifters Features to highlight include - Know exactly what weight to put on the bar for optimal training (%1RM / RPE) - Upload videos and share them directly with your coach to streamline athlete check-ins. - Keep track of your actual results directly in the app - Watch exercise demo videos directly in the app to perfect your lifting technique - Automatically track all your training metrics to ensure you are progressing toward your goal - Mark sets off as complete as you progress through your workout to stay organized. - Sync your account with HealthKit to track all your health and fitness data in one place including nutrition, steps and bodyweight. - and much more…

About

JuggernautAI

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
Read full description

Juggernaut Training Systems’ revolutionary A.I. strength training system has arrived on iOS. Subscribe to JuggernautAI to access all our coaching and get stronger than you can imagine with The Smartest Program for You. Designed by legendary coach Chad Wesley Smith with revolutionary technology by Tim Arnold, JuggernautAI is like having the best strength coach in the world with you during every workout in the gym. HOW IT WORKS JuggernautAI helps you reach your strength potential using our cutting edge technology - the JuggernautAI Powerlifting and Powerbuilding system - in an efficient and easy to use way; Decide on your goal of Powerlifting, to focus on building your Squat, Bench, and Deadlift, or Powerbuilding, to balance your focus between bodybuilding and strength training. Tell us about yourself, your level of experience, and your strength goals JuggernautAI will then design a unique individualized program tailored just for you with the use of expert technology As you progress, the system will continue to adapt your training plan based on your real-time individualized feedback, ensuring you continue to grow and achieve your strength goals. WHY IT WORKS Your JuggernautAI strength program is specifically tailored to your needs and includes; ◆◆ Individualized Volume Landmarks. Do enough training to advance but not so much that you can’t recover. ◆◆ Optimized Training Frequency. Decide how many days a week you want to train, and JuggernautAI will optimize when and how often you should Squat, Bench, and Deadlift. ◆◆ Personalized Periodization Strategy. JuggernautAI finds the best way to progress to ensure you maximize your training while also managing fatigue through a strategic phasic periodization plan. ◆◆ Exercise Selection for your Weak Points. JuggernautAI looks at your weak points and your strength in individual lifts to decide which exercises will be most effective in helping you improve. As a Powerbuilding user, you can also choose which body part to focus on to ensure your physique improves the way you want it to. ◆ Real-Time Feedback Your unique individualized program continues to adapt to your feedback with our Readiness Rating System, making adjustments to your program pre-session, intra-session, session to session, week to week, block to block, and program to program Subscribe to JuggernautAI and get the smartest program for you. ———- ABOUT JUGGERNAUT TRAINING SYSTEMS Juggernaut Training Systems is The Leader in Strength, having helped thousands of athletes from beginners to World Champions maximize their results and reach their goals. We deliver principle-based coaching through cutting-edge technology to help you get the best results of your life. Privacy Policy: https://www.jtsstrength.com/app-privacy-policy/ Terms of Use: https://www.jtsstrength.com/app-terms-of-use/

Screenshots

Training App (MyStrengthBook)4 screens
JuggernautAI4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
Training App (MyStrengthBook) versus JuggernautAI: the parameters behind the verdict, then further details
ParameterTraining App (MyStrengthBook)JuggernautAI
PriceFreeFree
Rating3.5 (50 ratings)4.8 (5.7K ratings) — better
Positive reviews27.3% of reviews72.7% of reviews — better
Number of ratings505.7K — better
Update frequencyEvery 5 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 — better15.6
Further details — not scored
Size92 MB108 MB
Age rating4+17+
DeveloperMy Strength Book IncJuggernaut Apps

Customer experience

Training App (MyStrengthBook)

All ratings50 ratings
Positive58.0%
Neutral4.0%
Negative38.0%
Written reviews33 reviews
Positive27.3%
Neutral15.2%
Negative57.6%

JuggernautAI

All ratings5,655 ratings
Positive97.0%
Neutral1.2%
Negative1.7%
Written reviews216 reviews
Positive72.7%
Neutral4.2%
Negative23.1%

Bugs and requests

Training App (MyStrengthBook)

Not enough reviews yet to summarise bugs or requests.

JuggernautAI

Reported bugs

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

Requested features

4 requests
  • 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

In-app purchases

None

Training App (MyStrengthBook)

No in-app purchases

1 purchases

JuggernautAI

Subscriptions1
  • JuggernautAI Monthly2 variants$34.991 Month

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.

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