# HIIT Timer - Simple Timer — A simple HIIT timer app

> A simple HIIT timer app (iPhone/iPad app by Shin Katayama.)

- Source: https://appshunter.io/ios/app/hiit-timer-simple-timer/id6752818078 (this page in markdown: same URL + `.md`)
- Developer: [Shin Katayama](https://appshunter.io/developer/1841174043)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 36 MB
- Languages: American English
- Released: 2025-09-25
- Data updated: 2026-05-13
- User reviews in markdown: https://appshunter.io/ios/app/hiit-timer-simple-timer/id6752818078/reviews.md

## What is HIIT Timer?

A simple timer app, perfect for HIIT training

With an ultra-large full-screen timer display, you can instantly see your remaining time even in the middle of your workout. No complicated features—just the essential functions you need to keep your training smooth and focused.

Main Features
• Large, easy-to-read full-screen timer display
• Automatic alternation between work and rest intervals
• 3-second countdown before each start so you’re ready
• Clear color coding: blue for work, orange for rest
• Simple controls for pause, resume, and skip
• Banner ads displayed on the home and timer screens

Customization Options
• Work time: freely set from 1 second to 15 minutes
• Rest time: freely set from 1 second to 15 minutes
• Sets: up to 99 sets supported
• Dark mode & light mode
• Available in both Japanese and English

Training Records
• Automatically saves completed sessions to history
• Check up to your last 100 records
• Stay motivated with visible training progress

Designed for Usability
• Runs in the background without interruption
• Accurate timekeeping even with screen lock
• Full accessibility support
• User-friendly design to prevent misoperation

Recommended for everyone—from beginners to advanced athletes—who wants to start HIIT training. No complex setup required. Download now and start your workout today!

Privacy First
All data is stored locally on your device and never shared externally.


## Version history (last 5 releases)

### 1.4.0 — 2026-02-27

Minor bug fixes have been implemented.

### 1.3.0 — 2026-02-25

Made minor UI refinements

### 1.2.0 — 2025-12-18

Made minor UI refinements

### 1.1.0 — 2025-10-01

・Redesigned tab layout
・Fixed an issue where ads were not displayed
・Simplified the settings page

### 1.0 — 2025-09-25

No release notes.

## Apps similar to HIIT Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [AnyTimer - HIIT](https://appshunter.io/ios/app/anytimer-hiit/id1604063072) | — | Free | Health & Fitness |
| [アブローラーカウント - 手軽な腹筋ローラー専用の回数管理](https://appshunter.io/ios/app/id1587434824) | — | Free | Health & Fitness |
| [毎日腕立て伏せ - うでたてふせ,プッシュアップ,腕立て](https://appshunter.io/ios/app/id1610840884) | — | Free | Health & Fitness |
| [My Coach: Abs](https://appshunter.io/ios/app/my-coach-abs/id1329291705) | — | Free | Health & Fitness |
| [muscle training workout record](https://appshunter.io/ios/app/muscle-training-workout-record/id6746397077) | — | Free | Health & Fitness |
| [WILLMA](https://appshunter.io/ios/app/willma/id6740177488) | 5.0 (2) | Free | Health & Fitness |

## More apps by Shin Katayama

- [anxijournal](https://appshunter.io/ios/app/anxijournal/id6755478437)
- [BlurMe｜人物自動認識ぼかしアプリ](https://appshunter.io/ios/app/blurme/id6755762589)
- [FastFlow - Fasting Tracker](https://appshunter.io/ios/app/fastflow-fasting-tracker/id6756208094)
- [Blacksmith Merge](https://appshunter.io/ios/app/blacksmith-merge/id6756599742)
- [Neon Jelly Puzzle](https://appshunter.io/ios/app/neon-jelly-puzzle/id6766546627)

All apps by Shin Katayama: https://appshunter.io/developer/1841174043

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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 2026-05-13.*