Closed-loop plan solver
Apps track your food or train you. None re-solve tomorrow’s session from last night’s dinner, your sleep, HRV and soreness as one optimisation. Volume, load and rest all move together.
Most apps hand you a 12-week program and hope you keep up. FitLex reads last night’s dinner, your sleep, your HRV and yesterday’s soreness, then rebuilds today’s session before you wake up — and tells you exactly why it changed.
of health & fitness app users are still active on day 30
churn rate for anyone under three workouts in their first fortnight
is the whole game. FitLex is built around getting you three sessions in before it — by removing every reason to skip one.
Every one of these exists because a specific thing makes people quit. Fix the reason, keep the user.
Apps track your food or train you. None re-solve tomorrow’s session from last night’s dinner, your sleep, HRV and soreness as one optimisation. Volume, load and rest all move together.
Photo calorie AI tops out at 75–85% on Indian home food, because every household’s rajma is different. Log your recipe once and FitLex matches it forever — no classifier, no guessing.
Every form checker compares you to a generic ideal. FitLex compares this rep to your own best rep — which is the only way to catch fatigue-driven breakdown before it becomes an injury.
You shoot in random poses and lighting, so normal progress reels look jerky and unconvincing. FitLex pose-normalises and light-normalises every shot, so twelve weeks plays back as one smooth change.
Handing everything to a language model is expensive, non-deterministic and unsafe — it will happily prescribe a 100 kg squat to a beginner. So we split the job in two.
The daily plan and workout logging never expire. Paid tiers add the parts that need a camera, a wearable or a lot of compute.
That is the only thing standing between you and actually sticking with this. FitLex is built to get you there — then it keeps re-solving for as long as you keep showing up.