Hourly Bio Rhythm vs Rytha

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.

Rytha accompanies your everyday life – quietly, on your own device. Follow your personal biorhythm for body, soul and mind, note what matters in your diary, and see how sun and moon shape your day. On your own, or together with a partner. WHAT RYTHA GIVES YOU • Biorhythm cards for body, soul and mind, with the trend compared to yesterday • A personal diary: a thought, a mood, a photo – ‚ as much or as little as you like • History and calendar, so you can see how your days connect • Sky calendar for your location: sunrise and sunset, moon phase and illumination, zodiac sign • Name days from the German calendar • Profiles for several people, and an optional link between two profiles to view their rhythms side by side • A personal review as a PDF you can keep or share • Home Screen widget for a glance at today • App lock with Face ID, Touch ID or your device passcode • Backup and restore, as a file you control YOUR DATA STAYS YOURS Rytha keeps your profiles, diary entries and attachments only on this device. There is no account, no cloud sync, and none of your data is sent to external servers. A backup is a local file – you decide where it goes and who sees it. Your location is used solely to calculate sun and moon times, and only after you allow it. PREMIUM, WITHOUT A SUBSCRIPTION The personal PDF review and linked partner profiles are Premium features. Buy once, keep it forever. No subscription, no recurring charges. A NOTE ON BIORHYTHM Biorhythm curves are calculated from your date of birth using fixed cycles. They are an aid for reflection, not a scientific measure. Rytha is not a medical app and does not give health advice.