# Workout Interval Timer Lite vs HIIT Interval Timer | Cero

The clearest difference is ads: Workout Interval Timer Lite at none against HIIT Interval Timer | Cero's shown. Workout Interval Timer Lite also leads on review sentiment (89% vs 75%) and iOS requirement (12.0 vs 16.0). HIIT Interval Timer | Cero's advantage is update cadence (every 3 days vs every 5 weeks). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Workout Interval Timer Lite sells 6 one-off in-app purchases and HIIT Interval Timer | Cero sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Workout Interval Timer Lite against 4.7 for HIIT Interval Timer | Cero. Both are backed by a comparable volume of ratings — 248 and 435 respectively. Written reviews are what separate them: 89% of Workout Interval Timer Lite's written reviews are positive against 75% of HIIT Interval Timer | Cero's.

Workout Interval Timer Lite ships an update every 5 weeks, HIIT Interval Timer | Cero every 3 days. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Workout Interval Timer Lite | HIIT Interval Timer | Cero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (248 ratings)](https://appshunter.io/ios/app/workout-interval-timer-lite/id914923684/reviews) | **[4.7 (435 ratings)](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392/reviews)** |
| Number of ratings | 248 | **435** |
| Positive reviews | **89.4% of reviews** | 74.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 36 MB | 43 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [DenciSoft s.r.o.](https://appshunter.io/developer/583724967) | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) |

## What reviewers say

### Workout Interval Timer Lite

[App page](https://appshunter.io/ios/app/workout-interval-timer-lite/id914923684)

This app coaches your workouts with customizable timers, allowing you to focus on training. It supports advanced features like location tracking and heart rate monitoring, with voice and audio cues for seamless interval management.

**Highlights:** Customizable interval timers (HIIT, Circuit, Custom, Simple), Location tracking for route and distance statistics, Heart rate training with Bluetooth LE monitor support, Voice and audio cues for interval notifications, Workout history and iCloud synchronization, Music integration for timers and intervals

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Custom Timers | $0.99 | one-time |
| Unlimited Simple Timers | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Unlimited Circuit Timers | $1.99 | one-time |
| Unlimited HIIT Timers | $1.99 | one-time |
| Full Version | $4.99 | one-time |

**What reviewers like**

- 👍 User-friendly and easy to use
- 💡 Highly customizable workouts
- 🚀 Efficient interval timers
- 🌟 Great sound effects and cues
- 🎨 Visually appealing design and color schemes

**What reviewers complain about**

- ⚠️ Deceptive free version limitations
- 💸 App feels expensive to some
- 🚫 Ads in paid version (reported by one user)
- 🎶 Music playback issues (stops randomly, restarts after pause)
- 🔊 Interval sounds not working consistently

**Reported bugs**

- Music stops during workouts randomly
- Interval sounds don't work half the time
- Ads appear in the paid no-ad version
- Music restarts after a pause even when 'play through pauses' is selected
- Asking to save workout after every timer use can be burdensome

**Requested features**

- Add a "for time" timer option
- Add lock screen notifications after each interval
- Add Apple Watch support
- Add a function to flash at the last 5 or 3 seconds of an interval
- Option to turn off workout saving after each timer use


### 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


## Frequently asked questions

### Is Workout Interval Timer Lite free?

Workout Interval Timer Lite 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, Workout Interval Timer Lite or HIIT Interval Timer | Cero?

HIIT Interval Timer | Cero is rated higher. Workout Interval Timer Lite averages 4.7 out of 5 from 248 ratings, while HIIT Interval Timer | Cero averages 4.7 from 435 ratings.

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

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

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

Workout Interval Timer Lite ships an update every 5 weeks, and HIIT Interval Timer | Cero every 3 days. Most recently, Workout Interval Timer Lite was updated on October 9, 2026 and HIIT Interval Timer | Cero on October 12, 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.*