Hourly Bio Rhythm

Hourly Bio Rhythm helps you understand your natural energy rhythm. During a short calibration phase, you log your energy throughout the day. The app uses your entries to build a personal daily curve and highlight your best moments for focus, activity, rest, and recovery. You can start for free and complete your calibration. After that, a one-time in-app purchase unlocks the full experience: your complete energy profile, activity and rest zones, widgets, smart notifications, and Apple Watch companion features. No subscription. Your rhythm, your data, your day.