Comparison

HIIT vs Interval Timer

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

Head to head
About

HIIT

This app offers short, high-intensity interval training (HIIT) workouts that can be done anywhere with no equipment. It provides scientifically proven exercises, custom timer templates, and progress tracking to help users achieve fitness results quickly.

Highlights
  • Short, high-intensity workouts
  • Customizable timer templates
  • Step-by-step instructions
  • Calendar and weight tracking
  • Voice and video guidance
  • Apple Health integration
Features
Read full description

Get our HIIT Workout app to get results FAST! Just 4 minutes of high intensity tabata intervals training will make you sweat and get your heart pumping. Replace long cardio workouts with shorter and more effective HIIT workouts. No equipment needed. Workout anytime,anywhere. No excuses. Features: • Scientifically proven short high intensity workouts to improve your health. • Custom templates so you can build your own timers. • Step by step instructions suitable for beginners and intermediates alike. • Calendar and weight tracker to track your progress. • Voice and video instructions. It's like having a personal trainer in your pocket. • This app is integrated with Apple Health to track your workouts,calories and weight. Free,quick and effective. What are you waiting for? Download the app,and get sweating! 7M - We heart fitness! SUBSCRIPTION PRICING AND TERMS We offer the following auto-renewing subscriptions: $29.99 per year $2.99 per week These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. If you subscribe before your free trial ends,the rest of your free trial period will be forfeited as soon as your purchase is confirmed. Read more about our terms and conditions here: Terms of Use: https://7mfitness.com/terms-of-use/ Privacy Policy: https://7mfitness.com/privacy-policy/

About

Interval Timer

This app provides a customizable interval timer for various workout types, including HIIT and Tabata. It features a minimalist design, audio guidance, rep counting, and workout history tracking. You can use your favorite music apps while training.

Highlights
  • Customizable timers and presets
  • Audio guidance and beep sounds
  • Rep counting functionality
  • Workout history and calendar view
  • Minimalist and glanceable design
  • Music app integration
Features
Read full description

Core is a professional interval timer for your daily workouts! - Workout with music: just use your favorite music apps while training. - Count Reps: can be used as a counter to count your workout reps. - Minimalist design: elegant interface and glanceable from afar. - Customizable timers: simple to create your own timers and save presets. - Audio Guide: beep sounds to use in noisy environments and voice guidance. - Workout history: keep track of your workout with stats and calendar view. - Suitable for all kinds of interval training: HIIT, Tabata, boxing, yoga, calisthenics, CrossFit, cardio exercises, circuit training and etc. This app includes optional auto-renewable subscriptions: Monthly ($1.99), Yearly ($7.99). Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. Current subscription may not be canceled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Privacy policy: https://xydigital.studio/Privacy-Policy-4e08709f9d9144558415c7776536786d Terms of use: https://xydigital.studio/Terms-of-Use-5d480081e6624643a7ac87cc87caf9f9 If you have any ideas to improve the App, please contact us via coretimerapp@gmail.com. Your feedback is highly valued!

Screenshots

HIIT4 screens
Interval Timer4 screens

Verdict

The call

The clearest difference is ads: Interval Timer at none against HIIT's shown. Interval Timer also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 91%). HIIT's advantage is ratings volume (31K vs 3). On price, update cadence, in-app purchases and monetization model 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. HIIT sells 11 in-app purchases, starting at $2.99 per 7 days and Interval Timer sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: HIIT has 31K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 91% of HIIT's written reviews are positive against 100% of Interval Timer's.

UpkeepUpdate frequency

HIIT ships an update monthly, Interval Timer every 3 weeks. The most recent releases landed on September 25, 2026 and June 5, 2026 respectively.

Scorecard5 real differences · 5 level
HIIT versus Interval Timer: the parameters behind the verdict, then further details
ParameterHIITInterval Timer
PriceFreeFree
Rating4.8 (31K ratings)5.0 (3 ratings) — better
Positive reviews90.8% of reviews100.0% of reviews — better
Number of ratings31K — better3
Update frequencyMonthlyEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.09.0 — better
Further details — not scored
Size159 MB91 MB
Age rating4+4+
DeveloperFast Builder LimitedYating Lu

Customer experience

HIIT

All ratings31,065 ratings
Positive96.7%
Neutral2.4%
Negative0.8%
Written reviews382 reviews
Positive90.8%
Neutral3.1%
Negative6.0%

Interval Timer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

HIIT

Reported bugs

2 issues
  • Some videos or links not working
  • Occasional crashes or performance issues

Requested features

4 requests
  • Option to create custom workouts
  • More workout types beyond just HIIT
  • Integration with fitness tracking apps
  • Ability to save favorite workouts

Interval Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

HIIT

Subscriptions11
  • Lock-in our cheapest price!3 Days trial$2.997 Days
  • 7M Pro$2.997 Days
  • Get Yearly Premium!$9.991 Year
Show 8 more
  • Interval Timer Pro + Workouts$12.991 Month
  • Interval Timer X premium7 Days trial$19.993 Months
  • 7M Pro$19.993 Months
  • Get Monthly Premium!$19.991 Month
  • Get Yearly Premium!$19.991 Year
  • Interval Timer X premium$29.991 Year
  • 7M Pro7 Days trial$29.991 Year
  • Interval Timer Pro + Workouts7 Days trial$39.991 Year
3 purchases

Interval Timer

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$7.991 Year
One-time1
  • Lifetime$9.99

Questions

Is HIIT free?
HIIT is free to download, with in-app purchases available.
Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Which has better reviews, HIIT or Interval Timer?
Interval Timer is rated higher. HIIT averages 4.8 out of 5 from 31K ratings, while Interval Timer averages 5.0 from 3 ratings.
Do HIIT or Interval Timer have ads?
HIIT shows ads; Interval Timer does not.
Which is updated more often, HIIT or Interval Timer?
HIIT ships an update monthly, and Interval Timer every 3 weeks. Most recently, HIIT was updated on September 25, 2026 and Interval Timer on June 5, 2026.

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