HIIT Timer - Simple Timer

A simple HIIT timer app

Free · Designed for iPad

An interval timer app, perfect for HIIT training, with a large timer display and simple controls to help you stay focused. 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.

  • This app has not received enough ratings or reviews to display an overview.

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

The developer, Shin Katayama, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data
  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

  • Provider
    • Shin Katayama
  • Size
    • 39.1 MB
  • Category
    • Health & Fitness
  • Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    • English
  • Age Rating
    4+
  • Copyright
    • © 2025 CaprioLab