Beast AI Performance
Fitness Optimization
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Beast AI builds workouts the way an elite coach would - if that coach had a PhD in exercise science and knew everything about your body, your goals, and your limits.
WHAT MAKES BEAST AI DIFFERENT
Most fitness apps shuffle exercises from a template. Beast AI mathematically constructs every workout from scratch using constraint programming. Every session respects your recovery state, spinal loading limits, optimal volume per muscle, and training interference effects.
The result? Workouts that are impossible to build by hand.
ADAPTIVE TRAINING
An optional morning check-in captures your sleep, energy, stress, and soreness. Beast AI calculates your readiness and adjusts accordingly. Tired? It dials back. Strong? It pushes harder. Over time, the AI learns which exercises your body responds to best.
8 TRAINING GOALS
• Hypertrophy — research-backed volume
• Strength — peak your max lifts
• Fat Loss — metabolic resistance training
• Power — explosive force development
• Speed — acceleration and velocity
• Endurance — cardiovascular capacity
• Longevity — joint-friendly training
• Lean - achieve more definition
Every goal follows published research. Nothing is made
up.
2,057 EXERCISES
Every exercise mapped across 36 muscle groups with biomechanics cues and injury flags. The AI selects exercises for your equipment, experience, injuries, and goals. Don't like one? Tap thumbs down and Beast AI swaps it instantly.
6-WEEK PERIODIZED PROGRAMS
Complete training cycles with automatic progression:
Week 1–2: Build work capacity
Week 3–4: Increase intensity
Week 5: Strategic overreach
Week 6: Recover and grow
Auto-deload triggers when fatigue accumulates. No more guessing.
AI NUTRITION
Snap a photo of your meal. AI estimates calories, protein, carbs, and fat instantly. No database searching or portion weighing.
24/7 AI COACH
Chat anytime about training, nutrition, or recovery. Your coach knows your profile, history, and program. It can rebuild your program, swap workouts, trigger recovery weeks, adjust volume, and update injury restrictions. All changes require your confirmation.
SMART VOLUME TRACKING
Track weekly sets per muscle against research-backed targets. Enough volume to grow, not so much you burn out. Prevents undertraining and overtraining automatically.
IN-WORKOUT FEATURES
• Guided warmups and cooldowns
• Rest timers and RPE tracking
• Weight auto-adjusts mid-session based on performance
• Swap any exercise for a smart alternative
Train smarter. Recover better. Get stronger.
Terms of Use: https://patricko37.github.io/beast-legal/terms
Privacy Policy: https://patricko37.github.io/beast-legal/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and performance improvements, user can now use the subscription button and actually start their free trial.
The developer, PATRICK JOSEPH O'DONOHUE V, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- PATRICK JOSEPH O'DONOHUE V
- Size
- 10.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Beast AI Yearly $49.99
- Beast AI Monthly $9.99
- Copyright
- © 2026 Patrick Joseph O'Donohue V