# Ultradian vs Focus Buddy

The clearest difference is in-app purchases: Ultradian at none against Focus Buddy's 2. Ultradian also leads on iOS requirement (17.5 vs 26.0). Focus Buddy's advantage is update cadence (every 2 days vs every 5 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Focus Buddy sells 2 one-off in-app purchases. Ultradian asks for nothing beyond the download.

Ultradian ships an update every 5 months, Focus Buddy every 2 days. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ultradian | Focus Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/ultradian/id1482130799/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 7 MB | 6 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Katherine Gratale](https://appshunter.io/developer/1482130798) | [Joseph Murillo](https://appshunter.io/developer/1690308348) |

## What reviewers say

### Ultradian

[App page](https://appshunter.io/ios/app/ultradian/id1482130799)

Leverage your natural energy cycles for optimal task management and rest. This app analyzes biometric data to predict your ultradian rhythms, helping you schedule demanding activities during peak energy and breaks when needed.

**Highlights:** Analyze biometric data, Predict ultradian rhythms, Schedule peak task times, Schedule rest breaks, Connects to Apple Health

**Features:** macOS Compatibility

**In-app purchases:** none


### Focus Buddy

[App page](https://appshunter.io/ios/app/focus-buddy-work-and-rest-timer/id6799808990)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Focus Buddy | $1.99 | one-time |
| Focus Buddy, for Family | $3.99 | one-time |


## Frequently asked questions

### Is Ultradian free?

Ultradian is free to download, with no in-app purchases.

### Is Focus Buddy free?

Focus Buddy is free to download, with in-app purchases available.

### Do Ultradian or Focus Buddy have ads?

Neither Ultradian nor Focus Buddy shows ads.

### Which is updated more often, Ultradian or Focus Buddy?

Ultradian ships an update every 5 months, and Focus Buddy every 2 days. Most recently, Ultradian was updated on October 15, 2026 and Focus Buddy on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*