Interval Timer: Focus & HIIT
Katsunobu Sunagawa Health & Fitness iPhoneiPadiPod touch
Interval Timer: Focus & HIIT is a free Health & Fitness app for iPhone and iPad by Katsunobu Sunagawa. Requires iOS 17.0. Updated October 15, 2026.
- Price
- Free
- on the App Store
- Size
- 69 MB
- Age 4+
- Updated
- Oct 15
- 2026 · v1.4.3
Screenshots
About Interval Timer: Focus & HIIT
Whether you're settling in to focus or about to move, this is one interval timer for both. Switch between Focus mode and Workout mode with a single tap, and each one greets you with its own timing defaults, color, and wording. In Focus mode the work phase is called "Focus"; in Workout mode it's "Work." Breaks are called "Breathe" and "Long Break" — no mechanical countdown language, just a bit of warmth while you push through. ■ Who it's for - Anyone using the Pomodoro Technique to focus on study or work - Anyone timing HIIT or Tabata-style workouts - Anyone who needs phase changes to actually reach them while the phone is locked - Anyone tired of timer apps buried in ads ■ Free features - Pomodoro preset (25 min work / 5 min break, 15 min long break every 4 sets, 8 sets total) - HIIT preset (fully customizable duration and set count) - Custom work time, rest time, and set count - Start, Pause, Reset, Skip - Sound + haptic + notification on every phase change — arrives even when the screen is locked - Save 1 custom preset - Screen stays awake while the timer runs - Session summary screen after the final set - Available in Japanese, English, and Simplified Chinese ■ Pro features (one-time purchase, no subscription) - Unlimited custom presets - History & Stats (today / this week / all-time focus totals, a 7-day chart, and a session log) - Focus BGM (16 tracks to choose from, continuous play and volume control) - No ads - Restore Purchases supported Timing is calculated from elapsed seconds since start, not a countdown that decrements — so coming back from the background or a locked screen never leaves the display out of sync.
What’s new
Version 1.4.3 · Updated October 15, 2026
• A firm buzz now marks every zero moment — start, phase change, and finish — even when your screen is locked, right in time with the chime. • You can now turn cue sounds and vibration on or off separately in Settings. Turn sounds off for a quiet, vibration-only timer.
App privacy
The developer, Katsunobu Sunagawa, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Advertising Data
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising, App Functionality
Alternatives to Interval Timer: Focus & HIIT
Looking for apps like Interval Timer: Focus & HIIT? Here are 6 similar apps on the App Store.
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Timer - Interval Workout Timer
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シンプルインターバルタイマー
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Roundwork – Interval Timer
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Interval Timer: Focus & HIIT | – | Free | October 15, 2026 | |
| Timer - Interval Workout Timer | – | Free | Sep 22, 2026 | Compare |
| シンプルインターバルタイマー | – | Free | Jul 23, 2026 | Compare |
| xTimer - HIIT & BPM Timer | – | Free | Oct 10, 2026 | Compare |
| Roundwork – Interval Timer | – | Free | Oct 7, 2026 | Compare |
| トレーニングタイマー_インターバル | – | Free | Oct 5, 2026 | Compare |
| Interval Routine Timer | – | Free | Oct 12, 2026 | Compare |