Ultradia
Ultradian rhythm tracker
$1.99 · Designed for iPhone
Ultradia – Your energy rhythm tracker
Discover your natural energy patterns and learn when you're at your best.
Ultradia uses your Apple Watch data to detect your ultradian rhythms – the 90-120 minute cycles of high and low energy that occur throughout the day. By understanding your personal rhythm, you can schedule demanding tasks when your energy naturally peaks and take breaks when it dips.
Track any activity
Log workouts, focused work sessions, creative projects, or housework. Ultradia tracks how you feel during different activities and learns which times of day work best for each type.
Features
- Real-time energy state monitoring
- Automatic HealthKit workout import
- Activity logging for exercise, work, creative tasks, and housework
- Energy window predictions
- Personalised correlation insights
- Sleep data integration
- Push notifications for optimal windows
- Companion Apple Watch app and widget
Privacy first
All data stays on your device. Ultradia uses Apple HealthKit to read your heart rate variability and activity data – nothing is uploaded or shared.
The science
Ultradian rhythms (specifically the Basic Rest-Activity Cycle) have been studied since the 1950s. Research shows these ~90-minute cycles affect alertness, cognitive performance, and physical readiness. By tracking the physiological markers of these cycles, Ultradia helps you work with your biology rather than against it.
Requirements
- Apple Watch required for rhythm detection
- Best results after 3+ days of continuous wear
Please note:
Ultradia is a general wellness tool designed to help you understand your energy patterns. Predictions are estimates based on your data and may not always match how you feel. This app is not a medical device and is not intended to diagnose, treat, or prevent any health condition. Always listen to your body.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
Added optional quiet time notification suppression, so it doesn't send alerts through the night when you're asleep. Fixed issue with app pulling in duplicate activity sessions. Fixed issue with average sleep times getting confused by going to bed after midnight. New Watch icon.
The developer, Manicgrin Media Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Manicgrin Media Ltd
- Size
- 9.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © Manicgrin Media Ltd.
