Subscription unlocked in the updated IPA, giving access to the app's paid features without an active plan. Download the Firefly: AI Fitness Trainer mod for iPhone/iPad and use the unlocked version right away.

Firefly watches your reps through your iPhone's camera and coaches your form in real time, no extra hardware required. Download the Firefly IPA for iPhone and get instant verbal and visual corrections that adjust to your flexibility and skill level.

Every session ends with a stick-figure 3D replay that shows exactly where your form broke down, while only correctly executed reps count toward your goals. A 7-day personalized plan targets posture, mobility and strength, and coaches or physical therapists can monitor client sessions remotely through their own dashboard.

Key features

Real-time verbal and visual form correction via camera
3D stick-figure replay after every workout
Adjustable coaching strictness and rep counting
7-day personalized posture, mobility and strength plan
Remote dashboard for coaches, trainers and physical therapists

Get Firefly on builds.io — download the IPA and install it on your iPhone in one tap, no PC.