# Ultradian — Discover productivity peaks

> Productivity app using biometric data to predict and optimize energy cycles. (iPhone/iPad app by Katherine Gratale.)

- Source: https://appshunter.io/ios/app/ultradian/id1482130799 (this page in markdown: same URL + `.md`)
- Developer: [Katherine Gratale](https://appshunter.io/developer/1482130798)
- Category: Productivity, Health & Fitness
- Price: Free
- Rating: 3.25/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.5 · 7 MB
- Languages: English
- Released: 2024-03-13
- Data updated: 2026-07-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ultradian/id1482130799/reviews.md

## What is Ultradian?

Experience peak productivity and well-timed rest with Ultradian, the app designed to help you leverage your natural energy cycle. By securely connecting to Apple Health, Ultradian analyzes your biometric data to predict your daily ultradian rhythms—empowering you to plan tougher tasks when you’re at your peak and schedule breaks when you need them most.

## Key features

- Analyze biometric data
- Predict ultradian rhythms
- Schedule peak task times
- Schedule rest breaks
- Connects to Apple Health

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/ultradian/id1482130799/reviews.md

### 4/5 — What’s the difference between energy, focus, and motivation?

*2024-04-05*

Nice app! The interace is good looking and smooth to work with. It’s just that there’s no explanation for the definition of different words. Also the contact is button on your website doesn’t work.

## Frequently asked questions about Ultradian

### What is Ultradian?

Ultradian is a productivity app designed to help you discover your peak productivity times and schedule rest effectively by analyzing your natural energy cycles.

### How does Ultradian work?

Ultradian securely connects to Apple Health to analyze your biometric data, predicting your daily ultradian rhythms to inform your task and break scheduling.

### Is Ultradian free to use?

Yes, Ultradian is available for free and does not feature advertisements or in-app purchases.

### What devices does Ultradian support?

Ultradian is currently supported on iPhone devices.

### What is the age rating for Ultradian?

Ultradian has an age rating of 4+.

### How often is Ultradian updated?

The latest version of Ultradian is 2.1, and it was last updated on January 15, 2025.

### What do users think of Ultradian?

Ultradian has an average rating of 3.3 stars based on 4 user ratings.

### Can Ultradian integrate with other apps?

Ultradian securely connects to Apple Health to analyze biometric data, which is its primary integration.

## Version history (last 3 releases)

### 2.1 — 2025-01-15

- Bug fixes

### 2.0 — 2025-01-14

We’ve completely overhauled Ultradian to make it easier than ever to track your natural energy cycles!
- Apple Health Integration: No more manual logging—Ultradian now syncs with your biometric data to automatically predict your ultradian rhythm.
- Improved User Experience: Enjoy a streamlined interface and smoother navigation for effortless daily tracking.

Update today and discover a simpler way to align your schedule with your body’s natural flow!

### 1.0 — 2024-03-14

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*