# HIIT Interval Timer | Cero vs Burn It

The clearest difference is rating: HIIT Interval Timer | Cero at 4.7 against Burn It's 3.8. HIIT Interval Timer | Cero also leads on update cadence (every 3 days vs every 3 months) and ratings volume (435 vs 4). Burn It's advantage is ads (none vs shown) and review sentiment (84% vs 75%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. HIIT Interval Timer | Cero sells 2 in-app purchases, starting at $2.99 per month and Burn It sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

HIIT Interval Timer | Cero holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: HIIT Interval Timer | Cero has 435 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 75% of HIIT Interval Timer | Cero's written reviews are positive against 84% of Burn It's, so the app with the better star average is not the one people write more warmly about.

HIIT Interval Timer | Cero ships an update every 3 days, Burn It every 3 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer | Cero | Burn It |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (435 ratings)](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/burn-it-interval-timer-tabata/id1459840470/reviews) |
| Number of ratings | **435** | 4 |
| Positive reviews | 74.6% of reviews | **84.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 43 MB | 23 MB |
| Requires iOS | 16.0 | **12.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) | [Roman Nikolaev](https://appshunter.io/developer/1618004965) |

## What reviewers say

### HIIT Interval Timer | Cero

[App page](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cero Pro Monthly | $2.99 | per month |
| Cero Pro | $14.99 | one-time |

**What reviewers like**

- 👍 Simple and straightforward
- 👍 Very practical and customizable
- 👍 Great for HIIT and Tabata
- 👍 Clear design and easy to use
- 👍 Good value, no subscription

**What reviewers complain about**

- 🔋 Drains battery
- 🎶 Music playback interrupted
- ⚠️ Ads interrupt timers
- 🔊 Weak or non-functional sound/haptics
- 🔄 Forced updates

**Reported bugs**

- 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**

- 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


### Burn It

[App page](https://appshunter.io/ios/app/burn-it-interval-timer-tabata/id1459840470)

This interval timer app is designed for circuit training, group classes, and independent practice. It allows users to create custom workouts or utilize pre-set Tabata routines. The app also includes a stopwatch and a simple, intuitive interface for effective training sessions.

**Highlights:** Customizable interval workouts, Pre-set Tabata routines, Stopwatch functionality, Group class timer, Simple interface, Intuitive controls

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BurnIt Pro - Discount 75% | $0.99 | one-time |
| BurnIt Pro - Discount 50% | $1.99 | one-time |
| BurnIt Pro - Discount 25% | $2.99 | one-time |
| BurnIt Pro | $3.99 | one-time |


## Frequently asked questions

### Is HIIT Interval Timer | Cero free?

HIIT Interval Timer | Cero is free to download, with in-app purchases available.

### Is Burn It free?

Burn It is free to download, with in-app purchases available.

### Which has better reviews, HIIT Interval Timer | Cero or Burn It?

HIIT Interval Timer | Cero is rated higher. HIIT Interval Timer | Cero averages 4.7 out of 5 from 435 ratings, while Burn It averages 3.8 from 4 ratings.

### Do HIIT Interval Timer | Cero or Burn It have ads?

HIIT Interval Timer | Cero shows ads; Burn It does not.

### Which is updated more often, HIIT Interval Timer | Cero or Burn It?

HIIT Interval Timer | Cero ships an update every 3 days, and Burn It every 3 months. Most recently, HIIT Interval Timer | Cero was updated on October 12, 2026 and Burn It on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*