Jack AI - Personal Trainer

Take a quick photo to get instant insights into your muscle mass, body fat percentage, and receive a custom workout plan tailored to your goals and current level.

AI Body Analysis

Instant body composition analysis from photos
Track muscle gains and fat loss over time
Personalized Jack Score fitness rating
Progress charts and visual comparisons

Smart Workout Programs

AI-generated personalized exercise routines
15+ exercises tailored to your fitness level
Real-time workout tracking and guidance
Progress tracking across all exercises

Progress Tracking

Visual body transformation gallery
Workout history and performance analytics
Daily activity logging (gym + off-day activities)
Streak tracking and motivation

Perfect for

Gym enthusiasts wanting structured programs
Beginners needing guided workout plans
Anyone tracking progress beyond the scale


Join others who've ditched the measuring tape for smarter fitness tracking, and never wonder what to do at the gym again.

Privacy-focused: Your photos are processed securely and never shared. All data remains private and under your control.

Subscription required: Jack Ai requires a subscription to access its features. A 3-day free trial is available for all new users. Subscriptions are available via In-App Purchase.

Terms of Use: https://jackai.app/terms