# HIIT Interval Timer | Cero vs Interval Timer

The clearest difference is review sentiment: HIIT Interval Timer | Cero at 75% against Interval Timer's 29%. HIIT Interval Timer | Cero also leads on update cadence (every 3 days vs every 5 months) and rating (4.7 vs 4.5). Interval Timer's advantage is ads (none vs shown) and iOS requirement (12.0 vs 16.0). On price, ratings volume, in-app purchases and monetization model 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 Interval Timer sells 3 in-app purchases, starting at $1.99 per month. 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 4.5. Both are backed by a comparable volume of ratings — 435 and 149 respectively. Written reviews point the same way: 75% of HIIT Interval Timer | Cero's written reviews are positive against 29% of Interval Timer's.

HIIT Interval Timer | Cero ships an update every 3 days, Interval Timer every 5 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer | Cero | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (435 ratings)](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392/reviews)** | [4.5 (149 ratings)](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573/reviews) |
| Number of ratings | **435** | 149 |
| Positive reviews | **74.6% of reviews** | 29.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 11 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) | [DMYTRO DOLOTOV](https://appshunter.io/developer/1536992504) |

## 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


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573)

This versatile timer assists with various fitness routines, including HIIT, Tabata, and boxing. It also functions as a productivity timer for tasks like Pomodoro. Easily configure intervals, sets, and rest periods for personalized workouts.

**Highlights:** HIIT and Tabata workout timer, Boxing and martial arts round timer, Productivity and Pomodoro timer, Customizable interval and set configurations, Templates for quick setup, Supports various fitness exercises

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access | $1.99 | per month |
| Lifetime Access -50% | $4.99 | one-time |
| Lifetime Access | $9.99 | 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 Interval Timer free?

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

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

HIIT Interval Timer | Cero is rated higher. HIIT Interval Timer | Cero averages 4.7 out of 5 from 435 ratings, while Interval Timer averages 4.5 from 149 ratings.

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

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

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

HIIT Interval Timer | Cero ships an update every 3 days, and Interval Timer every 5 months. Most recently, HIIT Interval Timer | Cero was updated on October 7, 2026 and Interval Timer on October 6, 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.*