Interval Timer vs HIIT Interval Timer | Cero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Timer
This app provides a simple and customizable timer for interval training like HIIT, Tabata, and EMOM. It offers audio cues, background operation, and integrates with Apple Watch for health tracking. Pre-built routines and workout reminders help users stay consistent with their fitness goals.
- Customizable interval timer
- Audio alerts for rounds
- Background operation
- Apple Watch integration
- Workout reminders
- Pre-built routines
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Set your work and rest intervals, press start, and focus on your workout. PureHIIT is a simple timer for HIIT, Tabata, EMOM, circuits, and boxing rounds. • Adjust work, rest, and round settings to suit your session. • Follow sound cues as you move from one phase to the next. • Keep listening to your music while you train. • Use the timer in the background or in landscape mode. • Start with a prebuilt routine or save your own. • Set workout reminders to help you keep a routine. Getting started is simple: choose a routine or set your intervals, check the number of rounds, and press start. Clear phase colors help you see when to work and when to rest. Free to download, with optional in-app purchases. Apple Watch features require Premium. On Apple Watch, the app integrates with Health to record heart rate and energy used. Make time for your next workout with PureHIIT. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
HIIT Interval Timer | Cero
This interval timer app enhances various workouts like HIIT, Tabata, and yoga with intuitive design and customizable timer modes. Create and save custom intervals, track calorie expenditure, and sync settings across devices, including Apple Watch.
- Customizable interval timers
- Simple and advanced timer modes
- Create and save multiple workout settings
- Apple Watch compatibility with heart monitor
- Automatic calorie tracking to Apple Health
- Cross-device sync
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Build an interval workout around the way you train. Cero is a flexible interval timer for HIIT, Tabata, circuit training, WODs and HYROX preparation. Set up a quick work/rest timer or program each interval in detail. Distinct colors, large controls and reliable cues keep you focused on the session instead of the clock. BUILD YOUR SESSION • Set work, recovery, sets, warm-up and cool-down. • Create advanced workouts with custom intervals, colors, icons and intensity levels. • Save, duplicate and reorder timers. • Share timers by file or QR code. • Review completed sessions in workout history. STAY IN THE WORKOUT • Follow compatible sessions with Live Activities and Dynamic Island. • Start saved or recent timers from Home Screen widgets. • Use Siri and Shortcuts to start, pause, resume and stop a timer. • Put Gym Display on a larger screen or mirrored TV. • Choose a default song or assign music to individual intervals. • Customize sounds, voice cues, vibrations and background alerts. TRAIN BY HEART RATE Adaptive HR can extend recovery until you reach your target heart rate, then guide hard efforts with low and high alerts. Pair a Bluetooth heart-rate monitor with iPhone or train with heart-rate data from Apple Watch. COUNTDOWN AND STOPWATCH The built-in countdown and lap stopwatch cover warm-ups, station changes, rest periods and race-day practice. Stopwatch sessions continue after you close and reopen the app. ON APPLE WATCH Run saved workouts from your wrist, follow heart rate and use the standalone countdown and stopwatch. Cero can save completed workouts and estimated calories to Apple Health. Automatic iCloud backups help protect saved timers and custom intervals. Useful for HIIT, Tabata, circuits, EMOM-style workouts, boxing rounds, strength and conditioning, indoor cycling, running intervals and hybrid race preparation. Feedback and suggestions: hi@flawless.studio Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: HIIT Interval Timer | Cero at every 3 days against Interval Timer's fortnightly. On price, rating, review sentiment and ratings volume 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 sells 8 in-app purchases, starting at $3.99 per month and HIIT Interval Timer | Cero sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Interval Timer against 4.7 for HIIT Interval Timer | Cero. Both are backed by a comparable volume of ratings — 296 and 435 respectively. Written reviews are what separate them: 73% of Interval Timer's written reviews are positive against 75% of HIIT Interval Timer | Cero's.
Interval Timer ships an update fortnightly, HIIT Interval Timer | Cero every 3 days. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.
| Parameter | Interval Timer | HIIT Interval Timer | Cero |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (296 ratings) — better | 4.7 (435 ratings) |
| Positive reviews | 73.3% of reviews | 74.6% of reviews — better |
| Number of ratings | 296 | 435 — better |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 45 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Miklos Pavel | Flawless Studio LLC |
Customer experience
Interval Timer
HIIT Interval Timer | Cero
Bugs and requests
Interval Timer
Not enough reviews yet to summarise bugs or requests.
HIIT Interval Timer | Cero
Reported bugs
4 issues- App runs in background draining battery
- Rotation broke after update
- Apple workout app overrides Cero app on Apple Watch
- Interval signals too weak or not working
Requested features
5 requests- Ability to group timers
- Option to add warm-up and cool-down features
- Ability to type numbers for time adjustment
- Timer sounds through headphones or interrupting music
- Ability to change exercise names
In-app purchases
Interval Timer
- Monthly$3.991 Month
- Yearly7 Days trial$19.991 Year
- Premium featuresFree
- Remove Ads$1.99
- Custom sounds$1.99
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- Premium features$4.99
- Premium features$9.99
- Premium features$14.99
HIIT Interval Timer | Cero
- Cero Pro$3.99
Questions
Is Interval Timer free?
Is HIIT Interval Timer | Cero free?
Which has better reviews, Interval Timer or HIIT Interval Timer | Cero?
Do Interval Timer or HIIT Interval Timer | Cero have ads?
Which is updated more often, Interval Timer or HIIT Interval Timer | Cero?
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