Stop guessing. Flexr uses constraint satisfaction algorithms to generate perfectly balanced training programs that respect muscle recovery, optimize sequencing, and fit your schedule.
Every feature is designed to help you train more efficiently and make real progress.
Our algorithm ensures you never work the same muscle groups consecutively, optimizing recovery and preventing overtraining.
Choose from Full Body, Upper/Lower, Push/Pull, or Torso/Limbs splits. The algorithm adapts to your training frequency.
Point-based volume system (1 point primary, 0.5 assisting) ensures balanced development across all muscle groups.
Rest times automatically scale based on your session duration—tighter for 30 min sessions, more generous for 90 min.
Track every set with weight, reps, and RIR. Historical data helps you see progress and maintain progressive overload.
Visualize your training with charts and calendar views. See volume distribution, workout frequency, and strength trends.
Set your preferences once, and let the algorithm do the heavy lifting.
Tell us your training frequency, available equipment, session duration, and preferred split type.
Our constraint satisfaction algorithm creates a balanced program respecting recovery patterns and exercise science.
Log your workouts, customize exercises with drag-and-drop, and watch your progress over time.
A clean, intuitive interface designed for the gym floor.
Choose the plan that fits your needs. Cancel anytime.
For dedicated lifters
Join thousands who've transformed their training with Flexr.
"Finally, an app that understands muscle recovery. I used to accidentally hit the same muscles two days in a row. Flexr's sequencing is genius."
"As a busy mom, I only have 30-minute windows. Flexr gives me efficient full-body workouts that actually make sense. No wasted time."
"The volume tracking is a game-changer. I can finally see if I'm hitting each muscle group enough. My gains have never been more balanced."
Join thousands of lifters who've upgraded their training with intelligent workout planning.