Comparison

HIIT Interval Timer | Cero vs Yoga Interval Timer | Namaste

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

Yoga Interval Timer | Namaste

This app serves as a personalized yoga instructor, allowing you to create custom yoga routines with various poses and segments. It offers detailed analytics to track your progress and includes a library of calming sounds to enhance your practice.

Highlights
  • Customizable yoga profiles
  • Pose segmentation
  • Progress analytics
  • HealthKit integration
  • Library of calming sounds
  • App theme customization
Read full description

Namaste is your personalized yoga instructor and tranquil sanctuary right in the comfort of your pocket. Grounded in the ancient wisdom of yoga, Namaste helps you create, manage and refine your unique yoga practice with a rich array of features and customization options. The app allows you to create profiles tailored to your preferences, goals, and skill levels. Each profile consists of different segments, with each segment representing a unique yoga pose or asana. Whether you are just embarking on your yoga journey or you are an advanced practitioner, Namaste adapts to your needs, offering a diverse array of asanas from the most basic to the more intricate and challenging ones. Namaste's detailed analytics and integration with Apple's HealthKit empowers you to track your progress in real-time. Observe and monitor your breath, flexibility, stamina and consistency as you evolve on your yoga journey. Whether you want to work on your tree pose or perfect your headstand, Namaste will offer insights that help you understand your body better and progress at your own pace. At the core of Namaste lies a commitment to create a soothing and conducive environment for your practice. To this end, we have integrated a serene library of bells and singing bowls, each carrying a unique vibration that is meant to aid relaxation and increase focus. Let the gentle rhythms of these ancient instruments guide your breath as you flow from one pose to the next. To further enhance your experience, Namaste offers a variety of beautiful themes that you can use to personalize the app. Namaste's Privacy Policy: https://zenfoundry.co/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

HIIT Interval Timer | Cero4 screens
Yoga Interval Timer | Namaste4 screens

Verdict

The call

The clearest difference is rating: HIIT Interval Timer | Cero at 4.7 against Yoga Interval Timer | Namaste's 3.3. HIIT Interval Timer | Cero also leads on review sentiment (75% vs 50%) and ratings volume (435 vs 6). Yoga Interval Timer | Namaste's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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 and Yoga Interval Timer | Namaste sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

HIIT Interval Timer | Cero holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: HIIT Interval Timer | Cero has 435 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 75% of HIIT Interval Timer | Cero's written reviews are positive against 50% of Yoga Interval Timer | Namaste's.

UpkeepUpdate frequency

HIIT Interval Timer | Cero ships an update every 2 weeks, Yoga Interval Timer | Namaste monthly. The most recent releases landed on September 20, 2026 and September 3, 2026 respectively.

Scorecard5 real differences · 5 level
HIIT Interval Timer | Cero versus Yoga Interval Timer | Namaste: the parameters behind the verdict, then further details
ParameterHIIT Interval Timer | CeroYoga Interval Timer | Namaste
PriceFreeFree
Rating4.7 (435 ratings) — better3.3 (6 ratings)
Positive reviews74.6% of reviews — better50.0% of reviews
Number of ratings435 — better6
Update frequencyEvery 2 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size42 MB26 MB
Age rating4+4+
DeveloperFlawless Studio LLCBart Jacobs

Customer experience

HIIT Interval Timer | Cero

All ratings435 ratings
Positive92.9%
Neutral3.9%
Negative3.2%
Written reviews59 reviews
Positive74.6%
Neutral10.2%
Negative15.3%

Yoga Interval Timer | Namaste

All ratings6 ratings
Positive50.0%
Neutral16.7%
Negative33.3%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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

Yoga Interval Timer | Namaste

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

HIIT Interval Timer | Cero

One-time1
  • Cero Pro$3.99
3 purchases

Yoga Interval Timer | Namaste

Subscriptions3
  • Namaste Premium Monthly$1.991 Month
  • Namaste Premium$14.991 Year
  • Namaste Premium Yearly$14.991 Year

Questions

Is HIIT Interval Timer | Cero free?
HIIT Interval Timer | Cero is free to download, with in-app purchases available.
Is Yoga Interval Timer | Namaste free?
Yoga Interval Timer | Namaste is free to download, with in-app purchases available.
Which has better reviews, HIIT Interval Timer | Cero or Yoga Interval Timer | Namaste?
HIIT Interval Timer | Cero is rated higher. HIIT Interval Timer | Cero averages 4.7 out of 5 from 435 ratings, while Yoga Interval Timer | Namaste averages 3.3 from 6 ratings.
Do HIIT Interval Timer | Cero or Yoga Interval Timer | Namaste have ads?
HIIT Interval Timer | Cero shows ads; Yoga Interval Timer | Namaste does not.
Which is updated more often, HIIT Interval Timer | Cero or Yoga Interval Timer | Namaste?
HIIT Interval Timer | Cero ships an update every 2 weeks, and Yoga Interval Timer | Namaste monthly. Most recently, HIIT Interval Timer | Cero was updated on September 20, 2026 and Yoga Interval Timer | Namaste on September 3, 2026.

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