Flex AI: Your AI Personal Trainer

Flex builds each session from your training history, recovery, and goals rather than dropping you into a template. You tell it what equipment you have, and it shapes the exercises around that. As your lifts change, the program moves with them. No templates. No guesswork.

This is the hook. You record a set, submit it, and the AI returns notes on bar path, depth, and joint position. Reviewers describe feedback like "nice lockout" and "nailed the depth" alongside corrections on head position and torso angle. It's built for the lifts where bad form costs you the most over time, which means squats, bench, deadlift, and rows.

Auto Progression bumps your weight or reps when your logged results say you're ready, and it keeps nudging them up over months of training. That takes the guesswork out of progressive overload, the slow grind that actually builds muscle. No spreadsheet, no mental math between sets.

You can log sets from your wrist without reaching for your phone. Tempo, reps, and rest all track with a tap, and your workout stays on the watch while you move between stations.

Flex leans into the social side. You compete on leaderboards, build streaks, earn badges, and post progress photos. It's motivation for people who get bored training solo. It isn't for everyone.

Already have a program you like? Photograph your spreadsheet and Flex converts it into a trackable routine, which is handy if you're migrating from a notes app, a paper log, or a coach who sent you a PDF last year.

The recovery view shows which muscles are still working off your last session. It's a nudge against training the same group two days running, informed by what you logged rather than a fixed schedule.