Ultradian vs Focus Buddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultradian
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.
- Analyze biometric data
- Predict ultradian rhythms
- Schedule peak task times
- Schedule rest breaks
- Connects to Apple Health
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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.
Focus Buddy
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Focus Buddy is a simple, beautiful timer built around the science of ultradian rhythms: work in focused bursts, then rest, and repeat. Choose from proven presets like 52/17, 40/20, and 25/5, or unlock your own custom lengths with Focus Buddy Pro. FEATURES • Built-in focus/rest presets: 52/17, 40/20, 25/5 • Custom Timers (Pro) • Custom Themes (Pro) • Live Activities & Dynamic Island • Home Screen widget (Pro) • Daily streaks No accounts. No ads. No subscriptions. Just a simple, distraction-free timer to help you focus and recharge, in rhythm.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Ultradian | Focus Buddy |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.5 — better | 26.0 |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Katherine Gratale | Joseph Murillo |
In-app purchases
Ultradian
No in-app purchases
Focus Buddy
- Focus Buddy$1.99
- Focus Buddy, for Family$3.99
