Temper: Fasting Timer

In-app purchases
Content rating
Everyone
50+
Downloads
Content rating
Everyone
In-App Purchases
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About this app

Temper is intermittent fasting without the noise. No calorie counting, no macro tracking, no dashboard you have to decode. Just a calm, beautiful timer and a clear picture of what is happening inside your body.

Start a fast in a single tap. Watch a glowing ring carry you through seven metabolic phases, from the first hours of digestion to fat burning, ketosis and autophagy. Keep a streak that forgives the occasional off day. Look back over a clean history and a few honest trends. Get a gentle reminder only when your goal is reached or a key phase begins.

Temper is built for people who fast to escape the spreadsheet, not to add another one.

WHAT YOU GET
- A one-tap fasting timer with 16:8, OMAD and custom plans
- Seven metabolic phases explained, shown live as you fast
- Streaks, history (list and calendar) and clear trends
- Milestones that mark your progress
- Gentle, sparse reminders
- Dark, focused design. No ads. No trackers. No account.

TEMPER PRO (optional, one time, no subscription)
- Custom accent colors
- Long and custom protocols
- Health sync
- Data export

The core timer is free forever. Pro is a one-time purchase, our deliberate answer to the subscription traps elsewhere.

Note: fasting phase timings are general guidance and vary from person to person. Temper is not medical advice. Talk to a professional before longer fasts.
Updated on
Jul 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness and 3 others
Data is encrypted in transit
You can request that data be deleted

What’s new

- Refreshed the More Apps section with updated icons
- General improvements and refinements