# Loop Timer - HIIT — Interval timer for HIIT

> Interval timer for HIIT (iPhone/iPad app by YOSHIYUKI UEMATSU.)

- Source: https://appshunter.io/ios/app/loop-timer-hiit/id6809250898 (this page in markdown: same URL + `.md`)
- Developer: [YOSHIYUKI UEMATSU](https://appshunter.io/developer/1895723706)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-09-10
- Data updated: 2026-10-09
- User reviews in markdown: https://appshunter.io/ios/app/loop-timer-hiit/id6809250898/reviews.md

## What is Loop Timer?

A simple interval timer that loops work and rest. Works with Apple Watch and the Dynamic Island.

Set your times, tap start, and it loops automatically — for Tabata, HIIT, circuit training, stretching, or timing sets at the gym.

■ Always visible in the Dynamic Island and on the Lock Screen
See the remaining time and current phase even while using other apps. The timer keeps running with the screen locked and alerts you with sound and vibration.

■ Apple Watch, right on your wrist
Start, pause and skip from your Apple Watch while your iPhone stays in your bag. Phases are signalled by haptics. Both devices stay in sync and show the same remaining time. Live heart rate appears on the Watch, the iPhone and the Dynamic Island.

■ Apple Health
Sessions are saved as HIIT workouts. With Apple Watch, heart rate and calories are recorded too. Review your history in the app: duration, energy, average and maximum heart rate.

■ Three counter styles
• Digits — just a big number
• Ring — the remaining time shrinks clockwise
• Bars — a bar chart you can read at a glance
Switch styles while running. Landscape is supported.

■ Sounds you can choose
Three volume levels and three sounds (beep, chime, wood). Preview each one with a tap.

■ Fine control
Adjust times in steps of 1, 5, 10 or 30 seconds — 23 seconds is no problem.

■ Two looks, nine languages
Choose the gray or pastel theme. Available in English, Japanese, Simplified and Traditional Chinese, Korean, Spanish, German, French and Portuguese.

■ Ready-made presets
• Tabata 20s/10s × 8 rounds
• HIIT 30s/30s × 10 rounds
• 4020 40s/20s × 8 rounds × 2 sets
• EMOM 50s/10s × 10 rounds

■ Free and unlocked
The free version runs all four presets, lets you switch counter styles and shows the Dynamic Island.
A one-time purchase (no subscription) unlocks:
• Changing every duration
• Saving your own named presets
• Volume and sound choice
• Apple Watch app with heart rate
• Apple Health recording and workout history

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock custom timing | $2.99 | one-time |



## Version history (last 4 releases)

### 1.3 — 2026-09-16

■ Apple Watch and heart rate
Start, pause and skip from your wrist. Live heart rate on the Watch, the iPhone and the Dynamic Island.

■ Apple Health
Save sessions as HIIT workouts and review your history: duration, energy, average and maximum heart rate.

■ Two looks
Choose between the gray and pastel themes.

■ Nine languages
Japanese, English, Simplified and Traditional Chinese, Korean, Spanish, German, French and Portuguese.

■ Also
Dynamic Island support, three sounds and volume levels, 1-second steps, landscape mode, and a cleaner main screen with settings on a separate page.

### 1.2 — 2026-09-13

■ 横向き表示に対応
実行画面は左にカウンター、右に操作の2カラムになります。

■ 有料版の内容を拡充
音量と音の種類の変更、Apple Watch アプリが有料版に含まれるようになりました。すでに解放済みの方はそのまま使えます。

■ ダイナミックアイランドの表示を改善
区間の切り替わりで表示が止まる問題を修正しました。

■ 細かな改善
・解放画面の内容を整理しました
・Apple Watch は iPhone が近くになくても、購入済みなら使えるようにしました

### 1.1 — 2026-09-11

■ ダイナミックアイランドとロック画面に対応
他のアプリを使っていても、残り時間とフェーズが常に見えるようになりました。

■ 音の設定を追加
・音量を3段階（小・中・大）から選べます
・音の種類をビープ・チャイム・ウッドの3種類から選べます。選ぶとその場で試聴できます

■ 時間の刻みを選べるように
1秒 / 5秒 / 10秒 / 30秒 から選べます。1秒刻みにすれば23秒のような細かい設定も可能です。

■ バックグラウンド動作を改善
画面ロック中や他アプリ使用中に合図が途切れにくくなりました。通話などで中断されても自動で復帰します。

■ 操作まわりの改善
・実行中に終了する際、確認をはさむようにしました
・ボタンのタップ領域を広げ、押しやすくしました
・合計時間とスタートボタンを画面下部に固定し、スクロールしても見えるようにしました
・Apple Watch の残り時間を大きく表示するようにしました

### 1.0 — 2026-09-10

No release notes.

## Apps similar to Loop Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Rounds Coach: Interval Timer](https://appshunter.io/ios/app/rounds-coach-interval-timer/id6812227856) | — | Free | Health & Fitness |
| [Tabata Timer by fit.how](https://appshunter.io/ios/app/tabata-timer-by-fithow/id6789702886) | — | Free | Health & Fitness |
| [Justfit: Interval Timer, Clock](https://appshunter.io/ios/app/justfit-interval-timer-clock/id6449503037) | 5.0 (1) | Free | Health & Fitness |
| [Interval Timer ~ HIIT & Tabata](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id6762538816) | — | Free | Health & Fitness |
| [井上レディースクリニック](https://appshunter.io/ios/app/id1591401402) | — | Free | Health & Fitness |
| [ArcX](https://appshunter.io/ios/app/arcx/id6444228322) | 1.7 (7) | Free | Health & Fitness |

## More apps by YOSHIYUKI UEMATSU

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- [釣りしるべ](https://appshunter.io/ios/app/id6784977276)
- [予定カレ](https://appshunter.io/ios/app/id6789890761)

All apps by YOSHIYUKI UEMATSU: https://appshunter.io/developer/1895723706

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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 2026-10-09.*