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. FitLexx 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. FitLexx 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. One of the four is in the app today; the other three say so.
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 FitLexx will match it forever — no classifier, no guessing. Saving a recipe of your own is not in the app yet.
Form checkers compare you to a generic ideal. FitLexx will compare this rep to your own best rep — which is the only way to catch fatigue-driven breakdown before it becomes an injury. Nothing in the app records video yet.
You shoot in random poses and lighting, so normal progress reels look jerky and unconvincing. FitLexx will pose-normalise and light-normalise every shot, so twelve weeks plays back as one smooth change. The app cannot store a photograph yet.
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 — they are being built, and nothing on this page can be bought yet. Everything FitLexx does today is free, with no card and nothing to cancel.
That is the only thing standing between you and actually sticking with this. FitLexx is built to get you there — then it keeps re-solving for as long as you keep showing up.