The API that turns your users' workouts into strength scores, levels and achievements. One endpoint, no data stored, no setup overhead.
From raw workout data to gamification metadata in a single POST request.
POST the exercise name, an array of sets with reps and weight and optionally, for more precise statistics, the athlete gender and age.
We estimate the 1-rep max, map it to established strength standards, and compute a population percentile.
Receive a structured JSON response with strength score, level, percentile, progress fraction, and the exact gap to the next level — ready to render.
One endpoint. All the data your app needs to turn reps into progress.
Estimates your one-rep max from any set using the Epley formula, taking the best across all sets.
Maps estimated 1RM to progression levels — novice, beginner, intermediate, advanced, elite — based on established strength standards.
Tells users exactly where they stand among the general lifting population — a number that makes progress tangible.
No accounts, no database, no sessions. Every request is self-contained — ideal for privacy-first apps or edge deployments.
Returns exact gap to the next level in terms of weight and percentage, giving users a concrete goal to chase — not just a label.
Clean JSON, typed response shapes. Drop it into your stack with a single fetch call.
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