Comparison

Fitness Workout Timer vs Interval Timer for HIIT | Cero

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fitness Workout Timer

This interval timer helps users manage various fitness routines like Tabata, HIIT, and strength training. It features large, easy-to-read text, customizable sound alerts, and progress tracking for workouts and body measurements. A free BMI calculator is also included.

Highlights
  • Interval timer for Tabata, HIIT, Boxing, Rope Skipping
  • Easy-to-read large text display
  • Customizable sound effects for workout states
  • Free BMI calculator and body measurement tracker
  • Daily workout and weight progress records
  • Pro version with ad removal and backup features
Features
Read full description

Fitness Workout Timer is a complete Interval Timer for Tabata, HIIT, Boxing, Rope Skipping, Abs, Butt, Core, Cardio Workouts and others fitness workouts which designed to help all workout lover to having their workout more easily. Start your workout today with the companion of Fitness Workouts Timer. Workouts for a better self! This super hit fitness workouts timer is now available for iPhone, iPad and iPod Touch! It is available in English, 中文简体,中文繁體. APP Features: • Easy read BIG text for your convenient. • Simple and nice layout design interface to make you comfortable. • Colorful layout changing make more fun for your workout. • Easy control Timer Setting. • Free BMI Calculator and records for you to know well your body. • A friendly record of your daily workout and weight for you to know well your workout progress. • Sound effects for you to know more easily the current state of workout for instance preparation for workout, workout start, rest and done. • Variety of sound effects for you to choose as the indication for different state of workout. • Weight, BMI, Body Fat Percentage & Skeletal Muscle Mass Tracker. • Body Measurement Tracker (Chest, Waist, Hips) • Customize Timer State Name • Pro Version In App Purchase with features - Permanent Advertisements Removal - Import & Export Backup - Customize Voice Alert Enjoy your workout, cheers! By downloading the app you are agreeing to our terms of service and privacy policy which can found at :- Privacy policy : www.zinitt.com/privacy/ Terms of service : www.zinitt.com/terms/ Lastly, a sincere “THANK YOU” for everyone who has enjoy Fitness Workout Timer! Like us on Facebook or following us on Twitter or official website for the latest update or more exciting App! Facebook : www.facebook.com/zinitt Twitter : www.twitter.com/zinitt Website : www.zinitt.com

About

Interval Timer for HIIT | 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.

Highlights
  • 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
Features
Read full description

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

Fitness Workout Timer4 screens
Interval Timer for HIIT | Cero4 screens

Verdict

The call

The clearest difference is update cadence: Interval Timer for HIIT | Cero at every 3 days against Fitness Workout Timer's every 3 months. Interval Timer for HIIT | Cero also leads on ratings volume (437 vs 8). Fitness Workout Timer's advantage is review sentiment (100% vs 75%) and iOS requirement (12.0 vs 16.0). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fitness Workout Timer sells 10 one-off in-app purchases and Interval Timer for HIIT | Cero sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Fitness Workout Timer against 4.7 for Interval Timer for HIIT | Cero. That said, the two scores are not equally well evidenced: Interval Timer for HIIT | Cero has 437 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 100% of Fitness Workout Timer's written reviews are positive against 75% of Interval Timer for HIIT | Cero's.

UpkeepUpdate frequency

Fitness Workout Timer ships an update every 3 months, Interval Timer for HIIT | Cero every 3 days. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
Fitness Workout Timer versus Interval Timer for HIIT | Cero: the parameters behind the verdict, then further details
ParameterFitness Workout TimerInterval Timer for HIIT | Cero
PriceFreeFree
Rating4.9 (8 ratings) — better4.7 (437 ratings)
Positive reviews100.0% of reviews — better74.6% of reviews
Number of ratings8437 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS12.0 — better16.0
Further details — not scored
Size38 MB45 MB
Age rating4+4+
DeveloperZinittFlawless Studio LLC

Customer experience

Fitness Workout Timer

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Interval Timer for HIIT | Cero

All ratings437 ratings
Positive92.9%
Neutral3.9%
Negative3.2%
Written reviews59 reviews
Positive74.6%
Neutral10.2%
Negative15.3%

Bugs and requests

Fitness Workout Timer

Not enough reviews yet to summarise bugs or requests.

Interval Timer for HIIT | 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

10 purchases

Fitness Workout Timer

One-time10
  • Upgrade Pro Version 2021$1.99
  • Upgrade Pro Version 2023$1.99
  • Pro Version$2.99
Show 7 more
  • Buy Me A Coffee$2.99
  • Pro Version + Snack$3.99
  • Pro Version 2021$4.99
  • Pro Version + Coffee$5.99
  • Buy Me A Meal$7.99
  • Pro Version 2023$8.99
  • Pro Version + Meal$10.99
2 purchases

Interval Timer for HIIT | Cero

Subscriptions1
  • Cero Pro Monthly7 Days trial$2.991 Month
One-time1
  • Cero Pro$14.99

Questions

Is Fitness Workout Timer free?
Fitness Workout Timer is free to download, with in-app purchases available.
Is Interval Timer for HIIT | Cero free?
Interval Timer for HIIT | Cero is free to download, with in-app purchases available.
Which has better reviews, Fitness Workout Timer or Interval Timer for HIIT | Cero?
Fitness Workout Timer is rated higher. Fitness Workout Timer averages 4.9 out of 5 from 8 ratings, while Interval Timer for HIIT | Cero averages 4.7 from 437 ratings.
Do Fitness Workout Timer or Interval Timer for HIIT | Cero have ads?
Both Fitness Workout Timer and Interval Timer for HIIT | Cero show ads.
Which is updated more often, Fitness Workout Timer or Interval Timer for HIIT | Cero?
Fitness Workout Timer ships an update every 3 months, and Interval Timer for HIIT | Cero every 3 days. Most recently, Fitness Workout Timer was updated on October 24, 2026 and Interval Timer for HIIT | Cero on October 24, 2026.

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