# HIIT vs HIIT Interval Timer | Cero

The clearest difference is update cadence: HIIT Interval Timer | Cero at every 3 days against HIIT's monthly. HIIT's advantage is ratings volume (31K vs 435) and review sentiment (91% vs 75%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. HIIT sells 11 in-app purchases, starting at $2.99 per 7 days and HIIT Interval Timer | Cero sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for HIIT against 4.7 for HIIT Interval Timer | Cero. That said, the two scores are not equally well evidenced: HIIT has 31K ratings behind it against 435, so its average is the more settled of the two. Written reviews are what separate them: 91% of HIIT's written reviews are positive against 75% of HIIT Interval Timer | Cero's.

HIIT ships an update monthly, HIIT Interval Timer | Cero every 3 days. Both last shipped on September 25, 2026.

## The numbers

| Metric | HIIT | HIIT Interval Timer | Cero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (31K ratings)](https://appshunter.io/ios/app/hiit-workouts-and-timer/id891535485/reviews)** | [4.7 (435 ratings)](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392/reviews) |
| Number of ratings | **31K** | 435 |
| Positive reviews | **90.8% of reviews** | 74.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 159 MB | 42 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fast Builder Limited](https://appshunter.io/developer/596300475) | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) |

## What reviewers say

### HIIT

[App page](https://appshunter.io/ios/app/hiit-workouts-and-timer/id891535485)

This app offers short, high-intensity interval training (HIIT) workouts that can be done anywhere with no equipment. It provides scientifically proven exercises, custom timer templates, and progress tracking to help users achieve fitness results quickly.

**Highlights:** Short, high-intensity workouts, Customizable timer templates, Step-by-step instructions, Calendar and weight tracking, Voice and video guidance, Apple Health integration

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lock-in our cheapest price! | $2.99 | per 7 days |
| 7M Pro | $2.99 | per 7 days |
| Get Yearly Premium! | $9.99 | per year |
| Interval Timer Pro + Workouts | $12.99 | per month |
| Interval Timer X premium | $19.99 | per 3 months |
| 7M Pro | $19.99 | per 3 months |
| Get Monthly Premium! | $19.99 | per month |
| Get Yearly Premium! | $19.99 | per year |
| Interval Timer X premium | $29.99 | per year |
| 7M Pro | $29.99 | per year |
| Interval Timer Pro + Workouts | $39.99 | per year |

**What reviewers like**

- 👍 Variety and flexibility of workouts
- 🚀 Easy to follow and effective workouts
- 💪 Workouts challenge users and help them see results
- 🎨 Good range of difficulty levels
- ⏱️ Convenient short workout options

**What reviewers complain about**

- 🐛 Some workouts are too easy or repetitive
- 🔇 Lack of music or audio guidance during workouts
- 💰 Concerns about paid subscription model
- 🤔 Lack of modifications or low-impact options

**Reported bugs**

- Some videos or links not working
- Occasional crashes or performance issues

**Requested features**

- Option to create custom workouts
- More workout types beyond just HIIT
- Integration with fitness tracking apps
- Ability to save favorite workouts


### 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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cero Pro | $3.99 | 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


## Frequently asked questions

### Is HIIT free?

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

### Is HIIT Interval Timer | Cero free?

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

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

HIIT is rated higher. HIIT averages 4.8 out of 5 from 31K ratings, while HIIT Interval Timer | Cero averages 4.7 from 435 ratings.

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

Both HIIT and HIIT Interval Timer | Cero show ads.

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

HIIT ships an update monthly, and HIIT Interval Timer | Cero every 3 days. Most recently, HIIT was updated on September 25, 2026 and HIIT Interval Timer | Cero on September 25, 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.*