Zenshin – Strength & Recovery

Strength training that adapts to your recovery and keeps you strong for decades. Buy once, no subscription. Recovery data stays on your device.

Zenshin is strength training built for the next forty years, not just the next twelve weeks. Most lifting apps simply record what you did. Zenshin helps you understand how recovery, strength training, running, cycling, and other activity fit together, without accounts, advertising, or tracking.

RECOVERY-AWARE TRAINING With your permission, Zenshin reads recovery signals from Apple Health, including heart rate variability, resting heart rate, and sleep. It calculates a clear daily readiness score on your device. Your readiness score is free. Zenshin Lifetime adds deeper recovery interpretation and can adjust a planned session when your recovery calls for a lighter day. You can always see what influenced the recommendation and choose whether to follow it.

COUNTS YOUR WHOLE TRAINING LOAD Zenshin considers runs, rides, walks, and hikes alongside your strength training. Zenshin Lifetime turns that activity into combined training-load trends, helping you notice when overall strain is climbing.

KNOWS WHEN TO BACK OFF When fatigue patterns build, Zenshin Lifetime can suggest a lighter week before they derail your training. Taking a well-timed step back is part of making sustainable progress.

SUSTAINABLE BY DESIGN Choose a training intent focused on longevity, hypertrophy, or strength. Progress with sensible load adjustments and a calm, encouraging approach designed for consistency over time. No punishing streaks. No gamified pressure. No nagging to do more.

EVERYTHING YOU NEED TO TRAIN • Fast, guided set logging • Custom exercises and workout plans • Superset support • Rest timer and Live Activity • Personal records and workout history • Progress charts and CSV export • Apple Health workout integration • Recovery check-ins and daily readiness

PRIVATE BY DESIGN HealthKit data and recovery analysis stay on your device. Zenshin has no developer-operated data servers, user accounts, analytics, advertising, or tracking SDKs. Exercise plans and workout history may sync through your private Apple iCloud account. This sync is handled by Apple and is not accessible to the developer.

FREE TO TRAIN. BUY ONCE TO GO DEEPER. Core workout logging, custom exercises and plans, basic progression, personal records, and today’s readiness score are free. A single optional purchase of Zenshin Lifetime unlocks: • Recovery-adjusted sessions • Readiness contributors and trends • Combined strength and cardio load insights • Lighter-week guidance • Training intent modes • Advanced progress charts

No subscription, ever.

Zenshin (前進) means “forward progress”: steady, sustainable, and built for life.

REQUIREMENTS Readiness requires compatible recovery data from Apple Watch or another wearable synced with Apple Health. Workout logging, plans, rest timers, progress tracking, and personal records work on iPhone alone.

Zenshin provides informational training guidance based on your activity. It is not a medical device and does not diagnose, treat, cure, or prevent any condition. Consult a qualified professional before beginning an exercise program.