HIIT vs Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Short, high-intensity workouts
- Customizable timer templates
- Step-by-step instructions
- Calendar and weight tracking
- Voice and video guidance
- Apple Health integration
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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/
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.
- Customizable timers and presets
- Audio guidance and beep sounds
- Rep counting functionality
- Workout history and calendar view
- Minimalist and glanceable design
- Music app integration
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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
Verdict
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
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.
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.
HIIT ships an update monthly, Interval Timer every 3 weeks. The most recent releases landed on September 25, 2026 and June 5, 2026 respectively.
| Parameter | HIIT | Interval Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (31K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 90.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 31K — better | 3 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 159 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | Fast Builder Limited | Yating Lu |
Customer experience
HIIT
Interval Timer
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
HIIT
- Lock-in our cheapest price!3 Days trial$2.997 Days
- 7M Pro$2.997 Days
- Get Yearly Premium!$9.991 Year
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- 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
Interval Timer
- Monthly$1.991 Month
- Yearly$7.991 Year
- Lifetime$9.99
Questions
Is HIIT free?
Is Interval Timer free?
Which has better reviews, HIIT or Interval Timer?
Do HIIT or Interval Timer have ads?
Which is updated more often, HIIT or Interval Timer?
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