Comparison

Intervals Pro vs Hiitmi HIIT Timer

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Hiitmi HIIT Timer

This interval timer app allows users to create and share custom high-intensity interval training (HIIT) workouts. Enjoy training with your favorite music or podcasts, guided by a motivating voice. Track your progress with simple statistics.

Highlights
  • Unlimited custom timer creation
  • Workout sharing with friends
  • Music and podcast integration
  • Motivating voice guidance
  • Workout statistics tracking
  • Ad-free experience
Features
Read full description

We are three friends who love high intensity interval training. But we couldn't find an interval timer app we liked, so we created one ourselves that we love. Features of Hiitmi No ads at all Unlimited number of created timers Easy and fun to use Create your own workout and share it with your friends Training with music: just use your favourite music or podcast service (Spotify, YouTube, etc.) Energetic and motivating female voice Keep track of your workouts with simple statistics

Screenshots

Intervals Pro4 screens
Hiitmi HIIT Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Hiitmi HIIT Timer at none against Intervals Pro's 8. Hiitmi HIIT Timer also leads on review sentiment (100% vs 84%). On price, update cadence, ads 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. Intervals Pro sells 8 in-app purchases, starting at $2.99 per month. Hiitmi HIIT Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Intervals Pro ships an update every 8 days, Hiitmi HIIT Timer fortnightly. The most recent releases landed on October 15, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
Intervals Pro versus Hiitmi HIIT Timer: the parameters behind the verdict, then further details
ParameterIntervals ProHiitmi HIIT Timer
PriceFreeFree
Rating4.8 (14K ratings) — better—
Positive reviews84.3% of reviews100.0% of reviews — better
Number of ratings14K — better—
Update frequencyEvery 8 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.517.0 — better
Further details — not scored
Size69 MB4 MB
Age rating4+4+
DeveloperIntervals, LLCChristian Stocker

Customer experience

Intervals Pro

All ratings13,612 ratings
Positive95.1%
Neutral1.7%
Negative3.2%
Written reviews1,083 reviews
Positive84.3%
Neutral4.9%
Negative10.8%

Hiitmi HIIT Timer

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Hiitmi HIIT Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Intervals Pro

Subscriptions2
  • Monthly Membership7 Days trial$2.991 Month
  • Yearly Membership7 Days trial$19.991 Year
One-time6
  • Generous Tip$0.99
  • Awesome Tip$1.99
  • Massive Tip$4.99
Show 3 more
  • Amazing Tip$9.99
  • Intervals Pro (Legacy)$69.99
  • Lifetime Access$69.99
None

Hiitmi HIIT Timer

No in-app purchases

Questions

Is Intervals Pro free?
Intervals Pro is free to download, with in-app purchases available.
Is Hiitmi HIIT Timer free?
Hiitmi HIIT Timer is free to download, with no in-app purchases.
Do Intervals Pro or Hiitmi HIIT Timer have ads?
Neither Intervals Pro nor Hiitmi HIIT Timer shows ads.
Which is updated more often, Intervals Pro or Hiitmi HIIT Timer?
Intervals Pro ships an update every 8 days, and Hiitmi HIIT Timer fortnightly. Most recently, Intervals Pro was updated on October 15, 2026 and Hiitmi HIIT Timer on September 29, 2026.

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