The gym log that reads the research so you don't have to.
Log every set in seconds. Then let your own data coach you — with the reasoning shown for every recommendation.
⚡ Log in seconds
Weight and reps pre-filled from your last set. Quick mode logs a whole session from one screen. Supersets, circuits, drop sets, warm-ups, plate calculator.
🗺️ A plan in 6 questions
Goal, experience, days, time, equipment, priorities — get a full weekly routine built to research-based volume targets. Or start from PPL, Upper/Lower, Full Body, or 5×5.
🧠 Coaching from your data
An anatomical muscle map down to individual heads, plateau alerts, daily readiness, and a weekly review with one-tap Apply. Every insight cites its research.
❤️ Heart-rate aware
Apple Watch, Garmin, Polar — anything that syncs to Apple Health. Cardio strain and fatigue warnings from your own sessions.
⌚ On your wrist
A companion Apple Watch app logs sets from the bar, and the rest timer lives in the Dynamic Island.
🔒 Private by design
No account. No analytics. No tracking. Your data lives on your phone and your own private iCloud — we never see it.
📚 Every number shows its evidence
Volume targets from Schoenfeld's dose-response meta-analysis. Monotony from Foster's session-RPE model. Readiness weighted toward self-reported wellness, following Saw et al. Progression on the reps-in-reserve RPE scale. Tap ⓘ on any card in the app to see how it was calculated and where the method comes from — or read the full methodology.
Free to log, forever. Pro coaching: subscription with 7-day free trial, or one-time lifetime purchase. English & Spanish.