Comparison

HIIT Interval Timer | Cero vs Mi Espacio Saludable

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

Head to head
About

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.

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/

About

Mi Espacio Saludable

Features
Read full description

Aplicación para los gimnasios Mi Espacio Saludable. Accede a los datos de tu centro deportivo Mi Espacio Saludable. Desde aquí puedes darte de alta en el centro y consultar los horarios de las clases, acceder a tus datos personales y descargarte entrenamientos personalizados con videotutoriales.

Screenshots

HIIT Interval Timer | Cero4 screens
Mi Espacio Saludable3 screens

Verdict

The call

The clearest difference is in-app purchases: Mi Espacio Saludable at none against HIIT Interval Timer | Cero's 1. Mi Espacio Saludable also leads on ads (none vs shown) and iOS requirement (11.0 vs 16.0). HIIT Interval Timer | Cero's advantage is update cadence (every 2 weeks vs every 9 months). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HIIT Interval Timer | Cero sells 1 one-off in-app purchase. Mi Espacio Saludable asks for nothing beyond the download.

UpkeepUpdate frequency

HIIT Interval Timer | Cero ships an update every 2 weeks, Mi Espacio Saludable every 9 months. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.

Scorecard4 real differences · 6 level
HIIT Interval Timer | Cero versus Mi Espacio Saludable: the parameters behind the verdict, then further details
ParameterHIIT Interval Timer | CeroMi Espacio Saludable
PriceFreeFree
Rating4.7 (435 ratings) — better—
Positive reviews74.6% of reviews—
Number of ratings435 — better—
Update frequencyEvery 2 weeks — betterEvery 9 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.011.0 — better
Further details — not scored
Size42 MB25 MB
Age rating4+4+
DeveloperFlawless Studio LLCVector Desarrollo y Aplicaciones, SL

Bugs and 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

Mi Espacio Saludable

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

HIIT Interval Timer | Cero

One-time1
  • Cero Pro$3.99
None

Mi Espacio Saludable

No in-app purchases

Questions

Is HIIT Interval Timer | Cero free?
HIIT Interval Timer | Cero is free to download, with in-app purchases available.
Is Mi Espacio Saludable free?
Mi Espacio Saludable is free to download, with no in-app purchases.
Do HIIT Interval Timer | Cero or Mi Espacio Saludable have ads?
HIIT Interval Timer | Cero shows ads; Mi Espacio Saludable does not.
Which is updated more often, HIIT Interval Timer | Cero or Mi Espacio Saludable?
HIIT Interval Timer | Cero ships an update every 2 weeks, and Mi Espacio Saludable every 9 months. Most recently, HIIT Interval Timer | Cero was updated on September 20, 2026 and Mi Espacio Saludable on September 13, 2026.

Other comparisons