Comparison

Interval Timer for HIIT | Cero vs Disposable Timer+

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

Head to head
About

Interval Timer for HIIT | Cero

Create custom interval workouts for HIIT, Tabata, and circuit training. Features adaptive heart rate training, Siri integration, and Apple Watch support. Track progress and share your custom routines.

Highlights
  • Customizable interval programming
  • Adaptive heart rate training
  • Siri and Shortcuts integration
  • Apple Watch app
  • Workout history and sharing
  • Live Activities and Dynamic Island support
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/

About

Disposable Timer+

Manage multiple timers and stopwatches simultaneously for various daily tasks. This app allows you to create, label, and reuse timers with customizable durations and gentle or funny alarms. It runs in the background, freeing you to use other applications while keeping track of your timed activities.

Highlights
  • Run multiple timers and stopwatches simultaneously
  • Create, label, and reuse custom timers
  • Timers run in the background
  • Repeat timers up to 100 times
  • Gentle and funny alarm options
  • Sleek and simple interface
Features
Read full description

Multiple timers and stopwatches at once! Time by the second, minute or hour. Runs in the background so you’re free to use other apps. From the studio who created the Boxing Timer. Get the humble little Super Timer+ app that’s as good as the Boxing Timer Create, label and reuse timers for anything – yoga stretches, timed quizzes, cooking rice, napping, therapeutic treatments or remembering to take your pills. Perfect for busy people, multi-taskers and forgetful folks. Super Timer+ has a sleek, streamlined design that stays out of your way and simplifies daily timed tasks. One tap starts it. One tap pauses or stops it. Simple. Download Super Timer+ to get ahead of your many activities today: + Run multiple timers and stopwatches simultaneously + Easily add time to a running timer + Repeat timers up to 100 times + Extremely easy to use + Beautiful, clean interface + One-tap functionality + Runs in the background + Times by the second Use our preset timers, or create your own for any number of timed events. Here’s how you can imagine using the app every single day: + Teachers use it for quizzes, breaks, recess, group work and nap time. + Students use it for practice LSAT exams, science experiments and laundry. + Parents use it for everything! Cooking, baking, boiling eggs, steeping tea, pressing coffee. Chore time, playtime, reading time, bath time, time outs. Piano practice, laundry, working out, picking up the kids, meditating and watering the plants. + Bakers save dough rise times separately – for perfectly leavened loaves. + Chefs use it for marinating, basting, broiling, straining – all on time, all at the same time. + Athletes time their planks and sets. Beat their best times. And apply ice or heat to pains without overdoing it. + Seniors use Super Timer+ to remember to take their pills. Mark halfway points during exercise walks. And time the grandkids so they take turns fairly. + Freelancers are now spending only as much time as they quoted on projects! + Developers use Super Timer+ to remember to look away from the screen every 30 minutes and stretch every hour. + Hairstylists use it to time perms and hair coloring. Gentle alarms keep kids calm and keep you in your zen state. Or choose funny alarms to make kids laugh. Includes 36 alarms.

Screenshots

Interval Timer for HIIT | Cero4 screens
Disposable Timer+4 screens

Verdict

The call

The clearest difference is rating: Interval Timer for HIIT | Cero at 4.7 against Disposable Timer+'s 4.2. Interval Timer for HIIT | Cero also leads on update cadence (every 3 days vs every 10 months) and ratings volume (441 vs 14). Disposable Timer+'s advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and monetization model 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. Interval Timer for HIIT | Cero sells 2 in-app purchases, starting at $2.99 per month and Disposable Timer+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer for HIIT | Cero holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Interval Timer for HIIT | Cero has 441 ratings behind it against 14, so its average is the more settled of the two.

UpkeepUpdate frequency

Interval Timer for HIIT | Cero ships an update every 3 days, Disposable Timer+ every 10 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer for HIIT | Cero versus Disposable Timer+: the parameters behind the verdict, then further details
ParameterInterval Timer for HIIT | CeroDisposable Timer+
PriceFreeFree
Rating4.7 (441 ratings) — better4.2 (14 ratings)
Positive reviews74.6% of reviews—
Number of ratings441 — better14
Update frequencyEvery 3 days — betterEvery 10 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.6 — better
Further details — not scored
Size59 MB21 MB
Age rating4+4+
DeveloperFlawless Studio LLCThang Nguyen

Customer experience

Interval Timer for HIIT | Cero

All ratings441 ratings
Positive93.0%
Neutral3.9%
Negative3.2%
Written reviews59 reviews
Positive74.6%
Neutral10.2%
Negative15.3%

Disposable Timer+

All ratings14 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

Bugs and 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

Disposable Timer+

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Interval Timer for HIIT | Cero

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

Disposable Timer+

One-time1
  • Pro Upgrade$4.99

Questions

Is Interval Timer for HIIT | Cero free?
Interval Timer for HIIT | Cero is free to download, with in-app purchases available.
Is Disposable Timer+ free?
Disposable Timer+ is free to download, with in-app purchases available.
Which has better reviews, Interval Timer for HIIT | Cero or Disposable Timer+?
Interval Timer for HIIT | Cero is rated higher. Interval Timer for HIIT | Cero averages 4.7 out of 5 from 441 ratings, while Disposable Timer+ averages 4.2 from 14 ratings.
Do Interval Timer for HIIT | Cero or Disposable Timer+ have ads?
Both Interval Timer for HIIT | Cero and Disposable Timer+ show ads.
Which is updated more often, Interval Timer for HIIT | Cero or Disposable Timer+?
Interval Timer for HIIT | Cero ships an update every 3 days, and Disposable Timer+ every 10 months. Most recently, Interval Timer for HIIT | Cero was updated on November 11, 2026 and Disposable Timer+ on November 3, 2026.

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