Best AI Workout Apps in 2025
Compare the top AI fitness apps: Arvo, Fitbod, Juggernaut AI, Strong, and Hevy. Find the perfect app for your training goals.
Quick Comparison
Side-by-side feature comparison of all apps
| Feature | Arvo | Fitbod | Juggernaut AI | Hevy | Strong |
|---|---|---|---|---|---|
| AI Adaptation | Set-by-set | Workout | Block | Basic | Minimal |
| Methodologies | 5 | 0 | 1 | 0 | 0 |
| Volume Tracking | MEV/MAV/MRV | Basic | RPE | Basic | Basic |
| Price/Month | €6 | $12.99 | $35 | Free/$9.99 | $4.99 |
| Apple Watch | Coming | Yes | No | Yes | Yes |
| Offline Mode | Full AI | Yes | Limited | Yes | Yes |
| Best For | Bodybuilding | General | Powerlifting | Social | Logging |
Detailed Reviews
In-depth analysis of each AI workout app
Arvo
Editor's ChoiceBest for Methodology-Specific Training
Price: €6/mo (Free beta) | Best for: Bodybuilders & serious lifters who want proven methodologies
Pros
- 5 proven methodologies (Kuba, Mentzer, FST-7, Y3T, Mountain Dog)
- Set-by-set AI adaptation (under 500ms)
- MEV/MAV/MRV volume tracking per muscle
- 20 specialized AI agents
- Excellent price-to-feature ratio
Cons
- -No Apple Watch app yet
- -Newer app (less established)
- -Focuses on bodybuilding (less cardio features)
Fitbod
Best for Equipment Variety
Price: $12.99/mo | Best for: General fitness enthusiasts with varied gym equipment
Pros
- Excellent gym equipment database
- Clean, intuitive interface
- Apple Watch integration
- Good for beginners
Cons
- -Generic programming (no specific methodologies)
- -Workout-level adaptation only
- -Basic volume tracking
- -Higher price for features offered
Juggernaut AI
Best for Powerlifting
Price: $35/mo | Best for: Competitive powerlifters preparing for meets
Pros
- Excellent powerlifting periodization
- Meet peaking protocols
- Block programming approach
- Chad Wesley Smith's methodology
Cons
- -Very expensive ($35/month)
- -Powerlifting-focused only
- -Less flexible for hypertrophy
- -Requires lifting experience
Hevy
Best for Social Features
Price: Free / $9.99/mo | Best for: Social lifters who want community features
Pros
- Free tier available
- Strong social/community features
- Workout sharing capabilities
- Simple, clean logging
Cons
- -Limited AI (more manual)
- -Basic programming
- -No methodology support
- -Free tier has limitations
Strong
Best Minimalist Option
Price: $4.99/mo | Best for: Minimalists who want simple logging with light AI
Pros
- Very simple interface
- Excellent Apple Watch app
- Low price point
- Fast workout logging
Cons
- -Minimal AI features
- -No real methodology support
- -Basic analytics
- -More logger than coach
Which App is Best For You?
Bodybuilding & Hypertrophy
For aesthetic-focused training with proven methodologies
Recommended: Arvo
Powerlifting Competition
For meet prep and competition peaking
Recommended: Juggernaut AI
Budget-Conscious
For AI coaching without breaking the bank
Recommended: Arvo (€6) or Hevy (Free)
Social & Community
For sharing workouts and community motivation
Recommended: Hevy
Simple Logging
For minimalists who want straightforward tracking
Recommended: Strong
General Fitness
For varied equipment and general workouts
Recommended: Fitbod
Frequently Asked Questions
What is the best AI workout app in 2025?
For methodology-specific training with multiple approaches (Kuba, Mentzer, FST-7), Arvo offers the best value at €6/month. For powerlifting, Juggernaut AI excels. For general fitness with equipment optimization, Fitbod is solid. The 'best' depends on your specific goals.
Are AI workout apps worth it?
Yes. AI workout apps provide personalized programming that adapts to your progress, typically costing €6-35/month vs €600+/month for a personal trainer. They're especially valuable for self-motivated individuals who want consistent, science-based training.
Which AI workout app is best for building muscle?
Arvo is specifically designed for hypertrophy with 5 proven bodybuilding methodologies (Kuba, Mentzer HIT, FST-7, Y3T, Mountain Dog) and MEV/MAV/MRV volume tracking. Fitbod also offers good muscle-building programming but without methodology specificity.
Can AI replace a personal trainer?
For most training scenarios, yes. AI apps provide consistent methodology adherence, real-time adaptation, and comprehensive tracking. Personal trainers still excel at hands-on form correction and working with injuries or special populations.
What is the cheapest AI workout app?
Hevy offers a free tier with basic AI features. Arvo is the best value for full AI coaching at €6/month (free during beta). Strong is $4.99/month but has limited AI. Fitbod ($12.99/month) and Juggernaut AI ($35/month) are premium options.
Ready to Start Training with AI?
Try Arvo free during beta - the best value AI workout app for serious lifters.