# OpenHIIT — Open Source Interval Timer > Open-source interval timer for workouts, work sprints, and study sessions. (iPhone/iPad app by Abigail Mabe.) - Source: https://appshunter.io/ios/app/openhiit/id6459617819 (this page in markdown: same URL + `.md`) - Developer: [Abigail Mabe](https://appshunter.io/developer/1701885217) - Category: Health & Fitness - Price: Free - Rating: 5.00/5 from 8 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 26 MB - Languages: English - Released: 2023-11-08 - Data updated: 2026-08-14 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/openhiit/id6459617819/reviews.md ## What is OpenHIIT? Enhance your daily routines with OpenHIIT, the versatile open-source interval timer app. Tailored for various activities, including but not limited to High-Intensity Interval Training (HIIT), OpenHIIT is a dynamic tool designed to optimize your tasks and foster a collaborative environment. OpenHIIT is free of ads and committed to providing an experience without in-app purchases or premium versions. Customizable Timing: Set intervals tailored to your preferences, whether it's for focused workouts, work sprints, or study sessions. Adapt OpenHIIT to your needs and make the most of your time. Precise Timing and User-Friendly Controls: Enjoy seamless sessions with accurate timing and intuitive controls. OpenHIIT ensures precision in intervals, allowing you to concentrate on your activities without disruptions. Stay in sync and maintain a steady pace throughout your tasks. Auditory and Visual Alerts: Stay informed and motivated with clear audio and visual alerts. OpenHIIT provides signals and indicators, keeping you aware of time changes without the need to glance at your device constantly. Keep your momentum going and stay on track. Open Source Collaboration: Join the collaborative spirit and become part of the OpenHIIT open-source community. Contribute to the app's development, suggest improvements, and share your ideas with users from various backgrounds. Together, we can shape the evolution of interval timers for diverse activities. Download OpenHIIT now to experience the flexibility and efficiency of an open-source interval timer. Take charge of your sessions, boost your productivity, and explore the full potential of OpenHIIT in various aspects of your daily life. Note: OpenHIIT is a project led by one individual with contributions from the community. Committed to quality and alignment with platform policies, OpenHIIT respects intellectual property rights. ## Key features - Customizable interval timing - Precise and user-friendly controls - Auditory and visual alerts - Open-source community collaboration - Ad-free experience ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/openhiit/id6459617819/reviews.md ### 5/5 — Wonderful *2026-03-18* What a great app! Has all the features of paid apps, with no ads and unlimited use all for free! This has work/rest periods, intervals, optional restarts, optional break between restarts, warm up, cool down, warning beeps called "get ready", halfway beeps! All customizable! Name and save your timers, choose sounds, even name each work period, e.g. “Push-ups”, “sit-ups” etc. And all so easy to use. Highly recommend this awesome HIIT timer! ### 5/5 — Excellent Tool *2025-10-29* Thank you to the developers for making this free and open source. ### 5/5 — Refreshingly simple and ad-free *2025-10-07* Exactly what I was looking for in a HIIT timer ### 5/5 — Great for 5BX *2025-01-30* I made 5 one minute intervals for the first four exercises (first two are duplicates). Works great! No ads. Thanks so much!! ### 5/5 — Great free timer/workout app *2023-12-14* Very good app, does everything needed. Sad that it isn't shown in the Appstore easily (I found it on Desktop Google and then came back here), likely because Apple wants to push you to use the paid apps which do the same. Improvement suggestions: Individual times per exercise; Audio naming workouts; Setup reminders. ### 5/5 — Great Workout App *2023-11-23* Helps me keep time with my workouts and I can program them all to rember for later ### 5/5 — Easy to use Interval Timer *2023-11-11* I was a beta tester for this app, I am so happy that it’s now available to everyone! It’s so easy to use and customize to your workout. I love the sounds and that I am able to save multiple timers. ### 5/5 — Great app for HIIT workouts! *2023-11-09* Easy to use with customizable workouts. Clear audio cues make workouts seamless. Highly recommended for anyone into high-intensity training! ## Frequently asked questions about OpenHIIT ### What is OpenHIIT? OpenHIIT is an open-source interval timer app designed to enhance routines like High-Intensity Interval Training (HIIT), work sprints, and study sessions. It offers customizable timing, precise controls, and auditory/visual alerts. ### Is OpenHIIT free to use? Yes, OpenHIIT is completely free to use. The app is committed to providing an experience without in-app purchases or premium versions, and it is also free of ads. ### What kind of alerts does OpenHIIT provide? OpenHIIT provides clear auditory and visual alerts to keep users informed and motivated. These signals and indicators help users stay aware of time changes without needing to constantly check their device. ### Can I contribute to OpenHIIT's development? Yes, OpenHIIT is an open-source project. Users are encouraged to join the community, contribute to the app's development, suggest improvements, and share ideas. ### What devices is OpenHIIT available on? OpenHIIT is available on iPhone, iPad, and iPod. It is designed to be compatible with Apple's iOS ecosystem. ### How often is OpenHIIT updated? The latest version of OpenHIIT is 1.6.2, last updated on February 7, 2026. While this indicates a recent update, the frequency of future updates will depend on community contributions and developer activity. ### What is the user rating for OpenHIIT? OpenHIIT has a perfect rating of 5.0 stars based on 7 ratings. This indicates a very positive user sentiment among its current users. ### Does OpenHIIT have ads? No, OpenHIIT is free of ads. The developers are committed to providing an uninterrupted experience for users, with no advertisements present in the application. ## Version history (last 5 releases) ### 1.7.0 — 2026-05-25 • Swipe to delete timers • Added configurable break sounds • New Settings page for app customization • Improved tablet portrait mode layout • Fixed interval numbering in certain timer setups • General performance improvements and maintenance updates ### 1.6.3 — 2026-05-11 Internal maintenance and dependency updates. No user-facing changes. ### 1.6.2 — 2026-02-07 - Removed seconds unit from restarts field. ### 1.6.1 — 2026-02-04 - Performance improvements and general app maintenance. - Improved timer completed text. ### 1.6.0 — 2025-12-16 Major UI improvements. ## Apps similar to OpenHIIT | App | Rating | Price | Category | | --- | --- | --- | --- | | [Simple Stretch Timer](https://appshunter.io/ios/app/simple-stretch-timer/id1594685221) | 4.9 (23) | Free | Health & Fitness | | [Interval(x)](https://appshunter.io/ios/app/intervalx/id6739734149) | 5.0 (1) | Free | Health & Fitness | | [WorkoutPulse \| Tabata Timer](https://appshunter.io/ios/app/workoutpulse-tabata-timer/id6444348524) | 5.0 (3) | Free | Health & Fitness | | [Ares - Workout Interval Timer](https://appshunter.io/ios/app/ares-workout-interval-timer/id6743498963) | 5.0 (21) | Free | Health & Fitness | | [OpenNutriTracker](https://appshunter.io/ios/app/opennutritracker/id6451490901) | 4.2 (12) | Free | Health & Fitness | | [i.Timer: HIIT & Tabata](https://appshunter.io/ios/app/itimer-hiit-and-tabata/id6504049425) | 4.7 (29) | Free | Health & Fitness | ## Related topics [abigail mabe](https://appshunter.io/ios/topics/abigail-mabe) --- *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 2026-08-14.*