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OpenHIIT

OpenHIIT

Open Source Interval Timer

9 ratings
10 reviews
💪 Health & Fitness
Free

Details

Released
November 8, 2023
Updated
May 25, 2026

Features

Developer

Abigail Mabe
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OpenHIIT screenshot #1 for iPhone
OpenHIIT screenshot #2 for iPhone
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About

This open-source interval timer app helps optimize various activities like workouts, work sprints, and study sessions. It offers customizable timing, precise controls, and clear auditory and visual alerts to keep you motivated and on track. Users can also join a collaborative community to contribute to its development.

✓Customizable interval timing
✓Precise and user-friendly controls
✓Auditory and visual alerts
✓Open-source community collaboration
✓Ad-free experience
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What's New in OpenHIIT

1.7.0

May 25, 2026

• 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

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User reviews

Most RecentHighest RatedLowest Rated

KEINE ABZOCKE

Die erste intervall app die mich nicht abzieht welch wunder! Sie ist wirklich gratis mal schauen ob sich das noch ändern wird
TTimeeey98

Perfect

Exactly what I was looking for! No adds, no paywall, just timers. Thank you!
PPeRoKu

Wonderful

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!
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CCaramelSeven

Excellent Tool

Thank you to the developers for making this free and open source.
WNWill Nickles

Refreshingly simple and ad-free

Exactly what I was looking for in a HIIT timer
Ppaul*g
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FAQ

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.