# SimpleHIIT - 4 Minute Timer — Zero setup. Tap to start HIIT > Zero setup. Tap to start HIIT (iPhone/iPad app by EGG STUDIO LIMITED LIABILITY CO.) - Source: https://appshunter.io/ios/app/simplehiit-4-minute-timer/id6758004093 (this page in markdown: same URL + `.md`) - Developer: [EGG STUDIO LIMITED LIABILITY CO](https://appshunter.io/developer/995821190) - Category: Health & Fitness, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.0 · 8 MB - Languages: American English, Japanese - Released: 2026-01-28 - Data updated: 2026-08-22 - User reviews in markdown: https://appshunter.io/ios/app/simplehiit-4-minute-timer/id6758004093/reviews.md ## What is SimpleHIIT? 4 MINUTES. SCIENTIFICALLY PROVEN. HIGHLY EFFECTIVE. High-Intensity Interval Training (HIIT) is a scientifically proven workout method that delivers maximum results in minimum time. Research shows HIIT can deliver significant cardiovascular benefits in a fraction of the time of traditional cardio. SimpleHIIT is the simplest way to practice this proven HIIT protocol. --- WHY SIMPLEHIIT? --- [1. ZERO CONFIGURATION] Open the app. Tap to start. That's it. - Preparation: 10 seconds - Work: 20 seconds - Rest: 10 seconds - Sets: 8 rounds - Total: about 4 minutes This is the scientifically optimized HIIT protocol. [2. MULTI-SENSORY FEEDBACK] - Visual: Phase-specific colors (Green = Work, Orange = Rest) - Audio: Clear alerts for phase transitions - Haptic: Vibration feedback synced with countdown Know exactly what to do without looking at your screen. [3. MUSIC FRIENDLY] Keep listening to your favorite music or podcasts. Timer sounds coexist with your audio - no interruptions. [4. BACKGROUND OPERATION] Timer keeps running accurately even when using other apps. Push notifications alert you to phase changes. [5. BEAUTIFUL & INTUITIVE] Clean dark-mode interface. Large numbers and progress rings - visible even mid-workout. --- PERFECT FOR --- - Busy professionals with no time for the gym - Remote workers fighting sedentary lifestyle - Anyone tired of complicated fitness apps - Morning routine optimizers - Science-backed fitness seekers --- HIIT BENEFITS --- - Improves both aerobic and anaerobic capacity - Maximizes fat burning efficiency - Boosts cardiovascular health - Increases metabolism - Triggers afterburn effect (EPOC) All in just 4 minutes. --- PRICING --- SimpleHIIT is free to use. All workout features are available without any limitations. - Remove Ads: Optional in-app purchase - Support Development: Buy the developer a protein shake if you love the app --- START NOW --- Download. Tap. Transform. Your 4 minutes start here. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $2.99 | one-time | | Buy the Developer a Protein Shake | $1.99 | one-time | ## Version history (last 1 release) ### 1.0.0 — 2026-01-28 No release notes. ## Apps similar to SimpleHIIT | App | Rating | Price | Category | | --- | --- | --- | --- | | [Simple Timer - HIIT, Tabata](https://appshunter.io/ios/app/simple-timer-hiit-tabata/id6744844224) | — | Free | Health & Fitness | | [Tai Chi: Seniors & Beginners](https://appshunter.io/ios/app/tai-chi-seniors-and-beginners/id6761743575) | 5.0 (4) | Free | Health & Fitness | | [HIIT Timer:シンプルな筋トレタイマー](https://appshunter.io/ios/app/hiit-timer/id1557592779) | — | Free | Health & Fitness | | [Stretch Timer - make your own](https://appshunter.io/ios/app/stretch-timer-make-your-own/id6755217811) | — | Free | Health & Fitness | | [Breathing Exercises - Breathin](https://appshunter.io/ios/app/breathing-exercises-breathin/id6450400397) | — | Free | Health & Fitness | | [Tabata Interval Workout](https://appshunter.io/ios/app/tabata-interval-workout/id6478903385) | — | Free | Health & Fitness | ## More apps by EGG STUDIO LIMITED LIABILITY CO - [外出チェッカー - 忘れ物・戸締まり確認](https://appshunter.io/ios/app/id1465446348) - [かいものリスト：買い物を効率化するアプリ](https://appshunter.io/ios/app/id6449669744) - [Video Audio Extraction](https://appshunter.io/ios/app/video-audio-extraction/id6504976972) - [Photo Organizer: AI Cleaner](https://appshunter.io/ios/app/photo-organizer-ai-cleaner/id6541762976) - [Grid Splitter Easy Photo Grids](https://appshunter.io/ios/app/grid-splitter-easy-photo-grids/id6602891375) - [Trash Day Reminder & Scheduler](https://appshunter.io/ios/app/trash-day-reminder-and-scheduler/id6615083615) All apps by EGG STUDIO LIMITED LIABILITY CO: https://appshunter.io/developer/995821190 --- *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 2026-08-22.*