Interval Timer □ HIIT Timer vs Ground Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Timer □ HIIT Timer
Create custom workout timers with adjustable intervals for exercise and rest. Track your progress with detailed history and statistics, and repeat past workouts easily. Enjoy audio cues without interrupting your music.
- Customizable intervals
- Workout and rest timers
- Voice or beep guides
- Background audio support
- Workout history and statistics
- Repeat previous workouts
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A simple and beautiful interval timer. 1. Drag to set your custom intervals for workout, rest, rounds, etc 2. Tap to start. Interval Timer doesn't interfere with your music or other apps: ∙ Listen to your music apps while you workout. ∙ Voice or beep guides for every workout. ∙ You can leave the app and still listen to the audio guides, in order to follow a workout you found online. And no need to manually record your workouts: ∙ Detailed history and statistics pages to track your progress. ∙ Repeat a previous workout from your history, so you don't need to set it again. If you have any ideas for how to improve the app, just tap "Contact Support' inside the app and let us know! We are always trying to improve Interval Timer This app includes an optional auto-renewable subscription (Premium Pass): Premium Pass beings with a free trial period, then an auto-renewable monthly subscription when trial ends. Payment will be charged to your Apple account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple Account Settings after purchase. Any unused portion of the free initial period will be forfeited when you purchase a subscription. Privacy Policy: https://float.support/interval-timer/privacy Terms of Use: https://float.support/interval-timer/terms
Ground Zero
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A place hosting an explosing bomb . This Ground Zero hosts an idea , an emotion and a physical experience . A training and a cycling experience which will transform and grow you. Energize with us at our Ground Zero. Download Ground Zero application and book your spot, manage your membership and find out our news and activities.
Screenshots
Verdict
The clearest difference is in-app purchases: Ground Zero at none against Interval Timer □ HIIT Timer's 5. Ground Zero also leads on iOS requirement (13 vs 15.6). 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
Both are free to download. Interval Timer □ HIIT Timer sells 5 in-app purchases, starting at $1.99 per month. Ground Zero asks for nothing beyond the download.
Interval Timer □ HIIT Timer ships an update every 5 weeks, Ground Zero monthly. The most recent releases landed on September 30, 2026 and September 22, 2026 respectively.
| Parameter | Interval Timer □ HIIT Timer | Ground Zero |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (86K ratings) — better | — |
| Positive reviews | 60.6% of reviews | — |
| Number of ratings | 86K — better | — |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 13 — better |
| Further details — not scored | ||
| Size | 34 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Float Tech, LLC | Konstantinos Anagnostakis |
Bugs and requests
Interval Timer □ HIIT Timer
Reported bugs
3 issues- Timer not always accurate
- Favorites/saved workouts feature not working
- Inconsistent behavior when pausing/resuming
Requested features
3 requests- Ability to save and name custom workouts
- More flexibility in exercise/rest time settings
- Option to adjust volume of voice prompts
Ground Zero
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Interval Timer □ HIIT Timer
- Premium Pass7 Days trial$1.991 Month
- Premium Pass7 Days trial$2.991 Month
- Lifetime Pass$14.99
- Lifetime Pass$19.99
- Premium Forever Promo$29.99
Ground Zero
No in-app purchases
Questions
Is Interval Timer □ HIIT Timer free?
Is Ground Zero free?
Do Interval Timer □ HIIT Timer or Ground Zero have ads?
Which is updated more often, Interval Timer □ HIIT Timer or Ground Zero?
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