Flex AI at a glance
Flex AI is an AI healthcare tool. Flex AI is an AI-powered personal trainer app that generates customized workouts based on your goals, performance, and recovery.
- Best for:
- Modern fitness technology company
- Pricing:
- Freemium — Pricing details not clearly available
- Standout feature:
- AI workout program generation
- Main limitation:
- Limited to Apple ecosystem, excluding Android users from accessing the platform
About Flex AI
Flex AI is a free AI-powered fitness app that generates fully personalized workout plans tailored to your training history, goals, recovery status, and performance. Available on iPhone and Apple Watch, it functions as your on-demand personal trainer.
AI Workout Generation Get custom workouts crafted daily with no templates or guesswork—just the right routine for you. Use voice commands to ask "Lex" (the AI) to adjust workouts based on your equipment, injuries, schedule, or preferences.
Real-time video analysis corrects your lifting technique, helping you master proper form, reduce injury risk, and ensure every rep counts toward progress.
Advanced AI Progression Automatically increases weight or reps based on your performance, making progressive overload—the foundation of muscle growth—effortless and optimized.
Muscle recovery tracking Workout sharing and community leaderboards Routine importer (convert spreadsheets to workouts) Custom exercise creation Apple Watch integration for logging sets on your wrist Fitness challenges and plate calculator Unlike template-based apps, Flex AI listens, learns, and adapts to your unique needs. Whether you're asking about form corrections, recovery strategies, nutrition, or training philosophy, the AI responds with personalized guidance. Rated 4.7 on the App Store and trusted by gym-goers and fitness professionals alike.
Download free on iPhone and Apple Watch at flexfitnessapp.com
