HIIT vs Intervals
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/
Intervals
Design custom interval training routines for high-intensity workouts. This free timer app offers large, clear visuals and audible cues for seamless transitions between exercises. It's ideal for home or outdoor fitness sessions, including Tabata and yoga.
- Custom interval workout creation
- Large font and contrasting colors
- Audible interval transition cues
- Supports Tabata and yoga workouts
- No account or personal data required
- Offline workout storage
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Use HIIT Builder Lite as a free interval timer to manage your High Intensity Interval Training to maximize your fitness. Create custom interval workouts to energize your personal training. The workout is stored on your device. There is no need to create an account. We don’t ask for any personal health data. HIIT Builder Lite is a great interval training app for home workouts or workouts at the park. You can create Tabata workouts or any HIIT workout of your choice. The ability to customize any interval workout to your needs allows you to take control of your fitness using HIIT Builder Lite as an interval timer for high intensity interval training. HIIT Builder Lite can also be used for custom yoga and other custom movement workouts. HIIT Builder Lite uses large fonts and contrasting colors to make it easy to see where you are in an exercise in your interval workout. Interval transitions are easy to see on the user interface. The app also rings bells when switching from one workout interval to the next workout interval. Each interval workout can be completely customized. You can have each exercise interval be the same length or you can modify each interval’s length to get exactly what you need from the exercise. Create as many interval workouts as you want. Download HIIT Builder Lite for a free interval timer. Thoughts, concerns, suggestions? We're always trying to improve. Please email us at info@hiitbuilderapp.com
Screenshots
Verdict
The clearest difference is in-app purchases: Intervals at none against HIIT's 11. Intervals also leads on rating (5.0 vs 4.8) and iOS requirement (12.1 vs 16.0). HIIT's advantage is ratings volume (31K vs 1) and update cadence (monthly vs every 4 months). On price, 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
Both are free to download. HIIT sells 11 in-app purchases, starting at $2.99 per 7 days. Intervals asks for nothing beyond the download.
Intervals 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 1, so its average is the more settled of the two.
HIIT ships an update monthly, Intervals every 4 months. The most recent releases landed on October 19, 2026 and October 2, 2026 respectively.
| Parameter | HIIT | Intervals |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (31K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 90.8% of reviews | — |
| Number of ratings | 31K — better | 1 |
| Update frequency | Monthly — better | Every 4 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 159 MB | 15 MB |
| Age rating | 4+ | 12+ |
| Developer | Fast Builder Limited | Curtis Wichern |
Customer experience
HIIT
Intervals
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
Intervals
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
Intervals
No in-app purchases
Questions
Is HIIT free?
Is Intervals free?
Which has better reviews, HIIT or Intervals?
Do HIIT or Intervals have ads?
Which is updated more often, HIIT or Intervals?
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