Intervals Pro vs Interval Timer・HIIT Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Intervals Pro
Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.
- Highly customizable intervals (time/distance)
- Spoken interval names and prompts
- Standalone Apple Watch workouts
- Workout history with Apple Health
- Home screen widgets for quick launch
- Bluetooth heart rate monitor support
- Siri Shortcuts integration
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Custom Interval Training at its best for iPhone, Apple Watch and iPad. Featured by Apple and recommended by fitness instructors, personal trainers, marathon runners, and coaches. Let Intervals Pro guide you through any type of interval workout: HIIT, running, strength training, yoga, stretching, circuit training, boxing, MMA, elliptical, rehabilitation, meditation, 7-minute workouts, and many more. FEATURED BY • Apple - App of the Day in 132 Countries • Apple - Workout with Apple Watch, Quick HIIT Workouts • Women's Health Magazine • COACH Magazine • SixColors.com HIGHLIGHTS • Highly Customizable • Home Screen Widgets to quickly launch timers • Spoken interval names and prompts • Customizable alert sounds • Standalone Apple Watch workouts. Leave your iPhone at home! • Workout History using Apple Health data • View an Apple Watch workout live on your iPhone! • Run in the background with the screen locked • Play music or podcasts using the app of your choice • Bluetooth heart rate monitor support for Apple Watch or iPhone • Fill your Activity Rings • Siri Shortcuts • Share timers with friends • Time and Distance Goals • Running Pace and Heart Rate Targets • Auto pause and resume • Send completed workouts to Strava • Confetti! PERSONALIZE YOUR WORKOUT • Customize the Name, Duration, Alert, and Color for each interval • Customize Alert Sounds and Voice Prompts to guide you through your workout • Set a Countdown Alert and vibrations when the interval is about to end • Optional halfway alert • Set target heart rate ranges for each interval • Set time and distance goals FLEXIBLE INTERVAL DURATIONS • Time based (e.g., 45 seconds) • Distance-based (e.g., 0.5 MI or KM) • Count up intervals keep running until your ready for the next interval • Estimated time or distance. Count down time or distance to zero and then continue the interval, counting up until you're ready to move on. THE BEST APPLE WATCH INTERVAL TIMER • Leave your phone at home with our standalone Apple Watch app • Control your music or podcasts on the "Now Playing" screen • View an Apple Watch workout live on your iPhone • Alert Sounds and Voice Prompts to guide you through your workout • Configurable haptic alert countdown that taps you on the wrist when the interval is ending • Track heart rate, calories, distance, and pace • Route tracking for running, walking, and cycling • Workouts contribute to the Apple Watch Activity Rings WORKOUT HISTORY USING APPLE HEALTH • Intervals Pro has the best Apple Health integration of any interval training app • Track heart rate, calories, distance, and pace • Route tracking for running, walking, and cycling • Detailed stats for every interval • All your data is safely stored in Apple Health GREAT FOR RUNNING AND CYCLING • Interval duration can be set to either a specified time or distance • Display current pace, pace for the interval, or pace for the entire run • Configure heart rate ranges per interval • Analyze each interval of your run in the workout history MULTIPLE VOICES AND LANGUAGES • Select the language and voice to use for all spoken alerts. • Spoken alerts are localized to 10 languages. Chinese (simplified), Danish, Dutch, French, German, Italian, Norwegian, Polish, Spanish, and Swedish. Get Intervals Pro today, and your workouts will never be the same! SUBSCRIPTION INFO Intervals Pro is free to download and has a free timer. To create multiple timers and unlock all the features of the app, you may choose between a monthly or yearly auto-renewing subscription option. Upon confirmation of the purchase, payment will be charged to your credit card through your iTunes account. Subscription renews automatically unless canceled at least 24 hours before the end of the subscription period. Subscriptions can be managed and auto-renewal turned off in Account Settings in the App Store app. Privacy Policy and Terms of Service: https://intervalspro.com/privacy-policy.html
Interval Timer・HIIT Timer
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Fitness Timer is your all-in-one workout timer app designed to help you stay focused, train efficiently, and monitor your fitness progress. Whether you're doing HIIT, strength training, Tabata, cardio, or yoga, this interval timer makes it easy to set up custom workouts and follow them with precision. Perfect for both beginners and advanced athletes, Fitness Timer delivers a clean, distraction-free experience with customizable intervals, real-time audio cues, and heart rate tracking—all without interrupting your music or other apps. Interval Timer for Every Workout Fitness Timer is a powerful yet simple workout timer built for all types of interval training: * Create and customize workout intervals for active time, rest time, and number of rounds * Set up timers for HIIT, Tabata, EMOM, AMRAP, circuit training, or stretching * Get started in seconds with a clean drag-and-set interface * Clear audio or voice alerts guide you through each interval Use Fitness Timer to structure your home workouts, gym routines, or running intervals without hassle. Heart Rate Monitor Using Camera Now featuring built-in heart rate monitoring with no extra device required. Use your phone's camera and flashlight to measure your heart rate instantly: * Place your finger on the camera to measure your pulse * Monitor heart rate before, during, or after exercise * Useful for cardio training, recovery, and intensity tracking This feature turns your phone into a lightweight heart rate tracker to support safe, effective workouts. Fitness Tracking and History Fitness Timer automatically logs every session so you can track your progress and stay motivated: * View workout history and total training time * Repeat previous sessions with one tap * Analyze your training patterns in the statistics tab Information about the auto-renewable nature of the subscription. Confirm subscription: Payment will be charged to iTunes Account at confirmation of purchase. Manage subscriptions: Users can manage or unsubscribe in iTunes & App Store account management in the phone system settings. Auto-renewal: Apple iTunes account will be charged for renewal within 24-hours prior to the end of the current subscription period. To cancel the renewal, please turn off auto-renew manually at least 24-hours before the end of the period. No cancellation of the current subscription is allowed during the active subscription period. You can go to the Account Settings to cancel the renewal before the trial ends. The current free trial will be forfeited when you purchase a subscription to the premium version before the trial period ends. By using the app, you confirm that you acknowledge and accept our Privacy Policy and Terms of Service: Privacy Policy: https://sites.google.com/view/reva-desai/privacy Terms of Service: https://sites.google.com/view/reva-desai/terms You no longer need to manually record your workouts—everything is saved automatically.
Screenshots
Verdict
The clearest difference is update cadence: Interval Timer・HIIT Timer at every 4 days against Intervals Pro's every 8 days. Interval Timer・HIIT Timer also leads on iOS requirement (15.0 vs 17.5). On price, ads, in-app purchases 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
Both are free to download. Intervals Pro sells 8 in-app purchases, starting at $2.99 per month and Interval Timer・HIIT Timer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Intervals Pro ships an update every 8 days, Interval Timer・HIIT Timer every 4 days. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.
| Parameter | Intervals Pro | Interval Timer・HIIT Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (14K ratings) — better | — |
| Positive reviews | 84.3% of reviews | — |
| Number of ratings | 14K — better | — |
| Update frequency | Every 8 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 69 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Intervals, LLC | Reva Desai |
Bugs and requests
Intervals Pro
Reported bugs
2 issues- Workout data not syncing correctly
- App crashes or freezes on certain devices
Requested features
3 requests- More customization options for interval displays
- Ability to batch delete or manage workout history
- Integration with more third-party fitness apps
Interval Timer・HIIT Timer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Intervals Pro
- Monthly Membership7 Days trial$2.991 Month
- Yearly Membership7 Days trial$19.991 Year
- Generous Tip$0.99
- Awesome Tip$1.99
- Massive Tip$4.99
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- Amazing Tip$9.99
- Intervals Pro (Legacy)$69.99
- Lifetime Access$69.99
Interval Timer・HIIT Timer
- Premium Monthly Access$2.991 Month
- Premium Yearly Access$19.991 Year
Questions
Is Intervals Pro free?
Is Interval Timer・HIIT Timer free?
Do Intervals Pro or Interval Timer・HIIT Timer have ads?
Which is updated more often, Intervals Pro or Interval Timer・HIIT Timer?
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