TimeFit vs HIIT Interval Timer | Cero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TimeFit
Create custom workout routines for various training methods like HIIT, Tabata, and Crossfit. This app offers interval timers, voice alerts, and a smart stopwatch to enhance your fitness sessions. Track your progress with a workout history log and share routines with others.
- Custom interval timer
- HIIT and Tabata support
- Voice alerts for exercises
- Smart stopwatch with lap tracking
- Workout history and notes
- Workout sharing
- Organized workout folders
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Create your workouts quickly and easily, whatever training methods you use Crossfit, HIIT, Tabata, TRX etc. *** A single watchword SIMPLICITY *** TimeFit app is an intelligent Tabata Timer with a custom interval timer. This advanced interval timer adds craziness to your fitness training and workouts. An enhanced timer with interval alerts make your training activity more interesting. TimeFit - Workout timer is your gym boss to track all your exercise activities. HIIT interval training timer makes it easy for you to calculate workouts routine. ### THE FEATURES OF TIMEFIT ### Smart Stopwatch - A smart stopwatch is integrated into the TimeFit app. It shows you the fastest and slowest lap live. Adaptive Circuit Training - A very easy to use editor with which you can create the circuit training adaptive to your sport. Interval Timer - Plan your workouts in advance using interval trainers. When the days come, they will be displayed on the home screen of the TimeFit. Seconds timer and minute timer are ready with interval alerts. TimeFit - Workout Timer IS THE ONLY ONE TO DO IT. Workout History - Logbook lets you keep track of your training history. Add workout photos and training notes to your routine. Voice Alerts - TimeFit will tell you the next exercise using enhanced timer and interval alerts. No need to look at the screen. The voice synthesis and the beeps are fully customizable. Personalized - Creates folders to organize your workouts. Easy Share - Exchange your workouts with your friends or with a sports coach. Eye Comfort - Large display is coloured for the comfort of the eyes even from a distance. An infinite number of colors are available. But as a practice is better than a long speech, I invite you to try it :) ^^^ IMPORTANT ^^^ - Notifications are only used to show current or upcoming workout when the application is in the background. - TimeFit will ask you for permission to access data from the Health application. TimeFit - Workout Timer uses information on weight, number of steps and distance travelled for enhanced user experience. ### WE NEED YOU ### - A great feature you would like to see integrated into the application? - An idea for improvement? - A nasty bug that's ruining your life? -- CONTACT US NOW -- more importantly -- WRITE A REVIEW -- it helps us a lot... Thank you all in advance and don't forget: $$$ SWEAT TODAY, SMILE TOMORROW! $$$ 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 TimeFit's fortnightly. HIIT Interval Timer | Cero also leads on iOS requirement (16.0 vs 18.0). 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. TimeFit sells 4 in-app purchases, starting at $3.99 per month and HIIT Interval Timer | Cero sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for TimeFit against 4.7 for HIIT Interval Timer | Cero. Both are backed by a comparable volume of ratings — 321 and 435 respectively. Written reviews split almost evenly too, at 75% and 75% positive.
TimeFit ships an update fortnightly, HIIT Interval Timer | Cero every 3 days. Both last shipped on October 12, 2026.
| Parameter | TimeFit | HIIT Interval Timer | Cero |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (321 ratings) | 4.7 (435 ratings) — better |
| Positive reviews | 74.8% of reviews — better | 74.6% of reviews |
| Number of ratings | 321 | 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, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Samir Mestari | Flawless Studio LLC |
Customer experience
TimeFit
HIIT Interval Timer | Cero
User reviews
TimeFit
From 321 App Store ratingsWhat we love
- 👍 Easy to use and configure
- 💪 Highly customizable workouts
- 🎵 Works with music in background
- 🗣️ Voice prompts for next exercise
- 💰 Good value for money (paid version)
Room to improve
- 💸 Expensive for full features
- quảng cáo Frequent and intrusive ads
- 🐛 Crashes frequently
- 🔒 Paywall for essential features
- 🗑️ Free version limited
HIIT Interval Timer | Cero
From 435 App Store ratingsWhat we love
- 👍 Simple and straightforward
- 👍 Very practical and customizable
- 👍 Great for HIIT and Tabata
- 👍 Clear design and easy to use
- 👍 Good value, no subscription
Room to improve
- 🔋 Drains battery
- 🎶 Music playback interrupted
- ⚠️ Ads interrupt timers
- 🔊 Weak or non-functional sound/haptics
- 🔄 Forced updates
Bugs and requests
TimeFit
Reported bugs
20 issues- Lost all data after update
- Crashes every time on opening
- Freezes on introductory pop-up
- Crashes randomly with voice alert language change
- Free version doesn't play timer
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- Obnoxious full-screen ads
- App crashes when trying to copy/paste workouts
- Copy/paste only copies folder, not exercises
- Exercises missing names in preview
- Timer not correct when using other apps simultaneously
- Timer stops when app is in background
- Timer hasn't been running when checked
- Interval timer only runs when screen is on
- Unable to contact developer
- Weight log only in kg
- Voice is too quiet
- Unable to restore purchase
- Text box moves out of screen when editing
- App crashes at 4 seconds before end of interval
- Randomly stops workouts part way through
Requested features
14 requests- Apple Watch compatibility
- iPad adaptation
- Visual statistics/graphs
- Independent voice volume control
- Ability to share workouts
Show 9 moreShow fewer
- Display photo with intervals
- Sync with Apple Watch
- Add daily photo
- Receive notifications for daily workouts
- Image or video of exercise
- Turn on/off individual alert sounds
- Fix text box positioning when naming steps
- Add statistics table for overview
- Restore purchase on new phone
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
TimeFit
- Monthly7 Days trial$3.991 Month
- Yearly (Recommended)14 Days trial$17.991 Year
- Upgrade to Pro$6.99
- Upgrade to Pro$8.99
HIIT Interval Timer | Cero
- Cero Pro Monthly7 Days trial$2.991 Month
- Cero Pro$14.99
Questions
Is TimeFit free?
Is HIIT Interval Timer | Cero free?
Which has better reviews, TimeFit or HIIT Interval Timer | Cero?
Do TimeFit or HIIT Interval Timer | Cero have ads?
Which is updated more often, TimeFit or HIIT Interval Timer | Cero?
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