# IntervalTimer Duo — HIIT, Pomodoro & Yoga Timer

> HIIT, Pomodoro & Yoga Timer (iPhone/iPad app by kosuke konuma.)

- Source: https://appshunter.io/ios/app/intervaltimer-duo/id6753626424 (this page in markdown: same URL + `.md`)
- Developer: [kosuke konuma](https://appshunter.io/developer/1767116232)
- Category: Health & Fitness, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.1 · 10 MB
- Languages: American English, French (France), German (Germany), Japanese, European Spanish
- Released: 2025-10-27
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/intervaltimer-duo/id6753626424/reviews.md

## What is IntervalTimer Duo?

IntervalTimer Duo is a simple and easy-to-use interval timer app for iPhone and iPad that alternates between two customizable timers.

【Key Uses】
• HIIT (High-Intensity Interval Training)
• Pomodoro Technique (work and break cycles)
• Cooking timing management
• Stretching and yoga routines
• Study and rest cycle management

【Features】
• Automatically alternate between two timers
• Each timer adjustable from 1 second to 60 minutes
• Preset feature to save and instantly recall favorite settings (1 preset free; unlimited presets: Premium)
• Share presets via link — let friends import your timer setup in one tap (Premium)
• Set counter to track progress toward your target sets (Premium)
• Audio notifications and vibration when timers end
• Live Activity shows remaining time on Lock Screen and Dynamic Island (Premium)
• Customizable alert sounds (extra sounds: Premium)
• Simple and intuitive interface

【Preset Sharing】
• Share your favorite timer configurations via link
• Recipients can import presets with a single tap
• Sync routines with your team or workout partners

【Ease of Use】
• One-tap start, pause, and reset
• Quick time setting with preset buttons
• Visual circular progress bars show remaining time
• Second timer can be enabled/disabled as needed
• Set counter tracks completed sets toward your goal

【Free & Premium】
The app is free to download and use. After installing, all premium features are unlocked for a 14-day free trial. When the trial ends, premium features require a one-time purchase (pay once, use forever) — a Universal Purchase shared between iOS and macOS.

Free forever:
• Two timers running alternately (1 second to 60 minutes each)
• One saved preset
• Basic alert sounds
• Audio and vibration notifications when timers end
• Circular progress bar

Premium (one-time purchase, or during the free trial):
• Unlimited presets
• Preset sharing via link
• Set counter
• Additional premium alert sounds
• Live Activity on Lock Screen and Dynamic Island

【Compatibility】
• iPhone and iPad
• Available in English, Japanese, French, German, and Spanish

【Universal Purchase】
If you own the macOS version, you can use the iOS version at no additional cost.

A simple yet fully-featured interval timer app that's perfect for any timing needs.

Privacy Policy: https://techback.info/interval-timer/ios/privacy-policy.html
Terms of Use (EULA): https://techback.info/interval-timer/ios/terms-of-use.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Version | $2.99 | one-time |



## Version history (last 5 releases)

### 1.2.5 — 2026-08-21

v1.2.5 — Background & Live Activity improvements

• Fixed an issue where timer alerts could stop sounding in the background
• Fixed the Live Activity on the Lock Screen and Dynamic Island freezing mid-session
• The Live Activity is now localized in 5 languages
• Alert sounds now respect the silent switch
• Improved VoiceOver support
• Other stability improvements

### 1.2.4 — 2026-08-01

v1.2.4 — Bug fixes

• Fixed an issue where the purchase status could be shown incorrectly after restoring purchases
• Internal improvements for overall stability

### 1.2.3 — 2026-07-17

v1.2.3 — Stability improvements and bug fixes

• Fixed an issue where a stale Live Activity could linger after the app was relaunched
• Fixed trial status not always being reflected correctly (for example, when offline)
• Improved resilience so that a single corrupted preset no longer hides your other presets
• Improved the stability of importing shared preset links
• Various minor fixes and overall stability improvements

### 1.2.2 — 2026-06-20

v1.2.2 — Stability improvements and refinements

• Fixed an issue where the Live Activity could occasionally become unstable when starting a timer
• Improved handling of purchase status (expiration and refunds)
• Added guidance about storage limits when importing presets
• Various bug fixes and stability improvements

### 1.2.1 — 2026-06-09

v1.2.1 — Fresh icon and better accuracy

• Refreshed the app icon with a brand-new design
• Improved timer accuracy in the background and on the Lock Screen, eliminating time drift when you return to the app
• Improved shared-link compatibility, fixing cases where links wouldn't open from email or social apps
• Minor bug fixes and stability improvements

## More apps by kosuke konuma

- [Habiting: Habit Tracker](https://appshunter.io/ios/app/habiting-habit-tracker/id6755500163)
- [CalSyncAlert - Calendar Alarm](https://appshunter.io/ios/app/calsyncalert-calendar-alarm/id6756097650)

All apps by kosuke konuma: https://appshunter.io/developer/1767116232

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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 2026-08-25.*