5/3/1 Workout logger vs JuggernautAI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
5/3/1 Workout logger
This app helps lifters plan, log, and track their Jim Wendler 5/3/1 and Beyond 5/3/1 cycles. It automates complex calculations for weight and reps, tracks progress with charts, and includes features like a plate calculator and rest timer. Focus on your lifts without the guesswork.
- Automated 5/3/1 cycle management
- Weight and rep calculation
- Progress tracking charts
- Plate calculator (plate math)
- Rest timer
- Supports major 5/3/1 templates
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◘ The Ultimate Jim Wendler 5/3/1 Workout Calculator & Strength Logger Stop managing spreadsheets! Highly rated 4.8 stars by over 5,000 lifters, the 5/3/1 Log: Wendler Workout Tracker is the essential app for planning, logging, and tracking your entire Jim Wendler 5/3/1, Beyond 5/3/1, and all custom 531 cycles. Trust the tracker that handles all the complex calculations so you can focus on hitting new PRs. This app is designed for serious powerlifting and strength training progression, eliminating guesswork and ensuring you follow the principles of Progressive Overload. ◘ Master the Big Lifts & Lift with Structure Think of this app as your personal coach giving you the structure and accountability you need. With our 5/3/1 calculator, there is no guesswork: * Show Up, Open App, Lift: The workout structure is automatically laid out for you. * Track and progress on all four main lifts: Squats, Deadlift, Bench Press, and Overhead Press (OHP). * The app manages your 5/3/1 progression by automatically laying out the weights and reps for each workout day. ◘ Privacy-Focused & User-First We built this app to be a clean, focused workout logger with maximum privacy: * NO Subscription. * NO Registration Required. * NO Ads. * NO Selling Your Data. * NO Recurring or Hidden Costs. ◘ Intelligent 5/3/1 Calculator & Progression * Automatic 5/3/1 Cycle Management: Enter your estimated 1 Rep Max (1RM / E1RM) once and let the app manage your entire 4-week cycle progression. * Training Max Control: Easily configure your Training Max Percentage for precise weight calculation. * Plates Calculator (Plate Math Solved): See exactly which weight plates to load for every set. Supports Kg/Lb and configurable bar weights for your main lifts. * Progress Tracking: Visualize your gains with detailed progress charts for your current 1RM and tracked Bodyweight. ◘ All Major 5/3/1 Templates & Variations Supported We support every popular template from the Beyond 5/3/1 book and community, giving you infinite customization to achieve your goals, whether building strength or muscle mass. * Boring But Big (BBB) Sets: Full configuration of your percentages for your supplemental workThe Ultimate Jim Wendler 5/3/1 Workout Calculator & Strength Log * Stop managing spreadsheets! Highly rated 4.8 stars by over 5,000 lifters, the 5/3/1 Log: Wendler Workout Tracker is the essential app for planning, logging, and tracking your entire Jim Wendler 5/3/1, Beyond 5/3/1, and all custom 531 cycles. Trust the tracker that handles all the complex calculations so you can focus on hitting new PRs. * This app is designed for serious powerlifting and strength training progression, eliminating guesswork and ensuring you follow the principles of Progressive Overload. ◘ Seamless Gym Experience Warm-up Sets: Automatic calculation and logging of all required warm-up sets included. Rest Timer: Built-in timer with configurable lengths to maintain workout intensity. Apple Health Integration: Automatically push your completed workout data to Apple Health. ◘ Trial & Feature Unlock Information The app includes a generous 3-week trial period with all features available. At the end of the trial, a one-time purchase is required to permanently unlock: * "5/3/1 Pro" Feature: To continue logging the main 5/3/1 workouts. * "Assistance Workouts" Feature: To continue logging your supplemental assistance exercises. ◘ Important Disclaimer This app is an independent calculator and log. It is not affiliated with Mr. Jim Wendler (the creator of the 5/3/1 program). We highly recommend purchasing his official book(s) to fully understand the philosophy behind the program.
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.
- 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
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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
Verdict
The clearest difference is monetization model: 5/3/1 Workout logger at free with in-app purchases against JuggernautAI's subscription. 5/3/1 Workout logger also leads on iOS requirement (12.0 vs 15.6). JuggernautAI's advantage is update cadence (every 4 days vs every 5 weeks). On price, rating, review sentiment and ratings volume 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
Both are free to download. 5/3/1 Workout logger sells 3 one-off in-app purchases and JuggernautAI sells 1 in-app purchase, starting at $34.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for 5/3/1 Workout logger against 4.8 for JuggernautAI. Both are backed by a comparable volume of ratings — 3.2K and 5.7K respectively. Written reviews are what separate them: 75% of 5/3/1 Workout logger's written reviews are positive against 73% of JuggernautAI's.
5/3/1 Workout logger ships an update every 5 weeks, JuggernautAI every 4 days. Both last shipped on October 29, 2026.
| Parameter | 5/3/1 Workout logger | JuggernautAI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (3.2K ratings) | 4.8 (5.7K ratings) — better |
| Positive reviews | 75.2% of reviews — better | 72.7% of reviews |
| Number of ratings | 3.2K | 5.7K — better |
| Update frequency | Every 5 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 22 MB | 108 MB |
| Age rating | 4+ | 17+ |
| Developer | Seetha Thangarasa | Juggernaut Apps |
Customer experience
5/3/1 Workout logger
JuggernautAI
User reviews
5/3/1 Workout logger
From 3.2K App Store ratingsWhat we love
- 👍 Organized and logical layout
- 🚀 Automatically adjusts 1RM based on performance
- 💪 Helps achieve strength gains
- 🔒 Respects user privacy
- 👍 Customizable and flexible
Room to improve
- 🐛 Miscalculates weights and reps
- 🐛 App crashes or resets during workouts
- 🐛 Difficulty adjusting training maxes
- 🐛 Inability to skip workouts
- 🐛 Accessory exercises not fully customizable
JuggernautAI
From 5.7K App Store ratingsWhat we love
- 🚀 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
Room to improve
- 💰 Expensive monthly subscription
- 🔒 Paywall restricts access to full app
- 🕰️ Excessive time required for workouts
- 🐛 Occasional bugs and glitches
Bugs and requests
5/3/1 Workout logger
Reported bugs
4 issues- App crashes when adding accessory exercises
- Weights not calculated correctly for main lifts
- Workout data not saving properly
- Apple Watch app not functioning as expected
Requested features
6 requests- Add more assistance exercise options
- Allow resetting of cycles and training maxes
- Improve Apple Watch integration and sync
- Add ability to view and edit past workout notes
- Implement more 5/3/1 program variations
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- Improve data backup and restore functionality
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
5/3/1 Workout logger
- Assistance workouts$3.99
- Apple Watch support$3.99
- 5/3/1 pro$9.99
JuggernautAI
- JuggernautAI Monthly2 variants$34.991 Month
Questions
Is 5/3/1 Workout logger free?
Is JuggernautAI free?
Which has better reviews, 5/3/1 Workout logger or JuggernautAI?
Do 5/3/1 Workout logger or JuggernautAI have ads?
Which is updated more often, 5/3/1 Workout logger or JuggernautAI?
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