Comparison

OpenHIIT vs Custom Interval Workout Timer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenHIIT

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.

Highlights
  • Customizable interval timing
  • Precise and user-friendly controls
  • Auditory and visual alerts
  • Open-source community collaboration
  • Ad-free experience
Features
Read full description

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.

About

Custom Interval Workout Timer

Features
Read full description

The ultimate workout timer for any training style. Whether you're doing Tabata sprints, EMOM weightlifting, AMRAP circuits, HIIT cardio, or boxing rounds — Custom Interval Workout Timer has you covered. TIMER TYPES • Tabata — Classic 20s work / 10s rest intervals • EMOM — Every Minute on the Minute • AMRAP — As Many Rounds As Possible with countdown • HIIT — Customizable work/rest intervals • Boxing — Round timer with rest periods • For Time — Count up with target time • Custom — Build any interval sequence you want POWERFUL FEATURES • Timer Chains — Link multiple timers to run back-to-back • Preset Library — 15+ ready-to-go workouts for beginners and pros • Manual Advance — Pause between intervals and go at your own pace • Adjustable Prep Time — Get ready before each workout starts AUDIO & HAPTICS • Voice Announcements — Hear phase changes and round counts • Countdown Beeps — Audio cues as intervals end • 7 Beep Sounds — Choose a different sound for each timer type • Haptic Feedback — Feel transitions even with sound off TRACK YOUR PROGRESS • Workout History — Log every completed session • Monthly Calendar — See your training at a glance • Weekly Stats — Track workouts and total training time STOPWATCH • Precision stopwatch with lap tracking • Fastest and slowest lap highlighting SHARE & CUSTOMIZE • Share timers via QR code or link • Import timers from friends • 8 accent colors and dark/light/system themes • Keep Screen On mode for hands-free training APPLE WATCH (Pro) • Mirror and control timers from your wrist APPLE HEALTH • Automatically log workouts to Apple Health • Contribute to your Activity Rings Download now and start training smarter. Terms of Use: https://sites.google.com/view/michaelmcgillapps/terms-of-service Privacy Policy: https://sites.google.com/view/michaelmcgillapps/privacy-policy

Screenshots

OpenHIIT2 screens
Custom Interval Workout Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: OpenHIIT at none against Custom Interval Workout Timer's 2. OpenHIIT also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month. OpenHIIT asks for nothing beyond the download.

UpkeepUpdate frequency

OpenHIIT ships an update monthly, Custom Interval Workout Timer every 3 weeks. The most recent releases landed on August 14, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 7 level
OpenHIIT versus Custom Interval Workout Timer: the parameters behind the verdict, then further details
ParameterOpenHIITCustom Interval Workout Timer
PriceFreeFree
Rating5.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size26 MB7 MB
Age rating4+4+
DeveloperAbigail MabeMichael McGill apps llc

In-app purchases

None

OpenHIIT

No in-app purchases

2 purchases

Custom Interval Workout Timer

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$19.991 Year

Questions

Is OpenHIIT free?
OpenHIIT is free to download, with no in-app purchases.
Is Custom Interval Workout Timer free?
Custom Interval Workout Timer is free to download, with in-app purchases available.
Do OpenHIIT or Custom Interval Workout Timer have ads?
Custom Interval Workout Timer shows ads; OpenHIIT does not.
Which is updated more often, OpenHIIT or Custom Interval Workout Timer?
OpenHIIT ships an update monthly, and Custom Interval Workout Timer every 3 weeks. Most recently, OpenHIIT was updated on August 14, 2026 and Custom Interval Workout Timer on September 10, 2026.

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