# HIIT Interval Timer | Cero vs Workout Timer App

The clearest difference is ads: Workout Timer App at none against HIIT Interval Timer | Cero's shown. Workout Timer App also leads on review sentiment (100% vs 75%). HIIT Interval Timer | Cero's advantage is update cadence (every 3 days vs every 2 months) and rating (4.7 vs 4.3). On price, in-app purchases, monetization model and iOS requirement there is nothing between them.

Both are free to download. HIIT Interval Timer | Cero sells 1 one-off in-app purchase and Workout Timer App sells 5 in-app purchases, starting at $4.99 per 7 days. 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 4.3. That said, the two scores are not equally well evidenced: HIIT Interval Timer | Cero has 435 ratings behind it against 3, 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 100% of Workout Timer App'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, Workout Timer App every 2 months. The most recent releases landed on September 29, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer | Cero | Workout Timer App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (435 ratings)](https://appshunter.io/ios/app/hiit-interval-timer-cero/id1256319392/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/workout-timer-app-push/id1634333837/reviews) |
| Number of ratings | **435** | 3 |
| Positive reviews | 74.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 42 MB | 65 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) | [Foobar Creative](https://appshunter.io/developer/464777525) |

## 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 (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


### Workout Timer App

[App page](https://appshunter.io/ios/app/workout-timer-app-push/id1634333837)

Create and manage custom interval timers for your workouts. This app integrates with Apple Health to track your fitness data and offers a variety of alert sounds to keep you motivated. Build tailored routines to achieve your fitness goals.

**Highlights:** Customizable workout timers, Apple Health integration, Pre-configured workout timers, Powerful timer editor, Customizable alert sounds, Workout activity type selection

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Workout Timer Premium Weekly | $4.99 | per 7 days |
| Workout Timer Premium Monthly | $6.99 | per month |
| Workout Timer Premium Yearly | $29.99 | per year |
| Workout Timer Premium Yearly | $29.99 | per year |
| Premium Lifetime | $29.99 | 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 Workout Timer App free?

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

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

HIIT Interval Timer | Cero is rated higher. HIIT Interval Timer | Cero averages 4.7 out of 5 from 435 ratings, while Workout Timer App averages 4.3 from 3 ratings.

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

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

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

HIIT Interval Timer | Cero ships an update every 3 days, and Workout Timer App every 2 months. Most recently, HIIT Interval Timer | Cero was updated on September 29, 2026 and Workout Timer App on September 21, 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.*