# My LapTimer vs Interval Timer for HIIT | Cero

The clearest difference is price: Interval Timer for HIIT | Cero at Free against My LapTimer's $0.99. Interval Timer for HIIT | Cero also leads on update cadence (every 3 days vs fortnightly). My LapTimer's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Interval Timer for HIIT | Cero is free to download; My LapTimer costs $0.99 up front. Interval Timer for HIIT | Cero sells 2 in-app purchases, starting at $2.99 per month. My LapTimer asks for nothing beyond the download.

My LapTimer ships an update fortnightly, Interval Timer for HIIT | Cero every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | My LapTimer | Interval Timer for HIIT | Cero |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (437 ratings)](https://appshunter.io/ios/app/interval-timer-for-hiit-cero/id1256319392/reviews)** |
| Number of ratings | — | **437** |
| Positive reviews | **100.0% of reviews** | 74.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 45 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Godfrey Raftesath](https://appshunter.io/developer/434548051) | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) |

## What reviewers say

### My LapTimer

[App page](https://appshunter.io/ios/app/my-laptimer/id1215157703)

This app is designed for runners to easily track laps and interval training directly from their smartwatch. It provides real-time data like elapsed time, distance, pace, and heart rate, with options for custom lap distances and rest times. The companion iPhone app allows for data management and sharing.

**Highlights:** Single-tap lap start/stop, Real-time pace and distance display, Optional heart rate tracking, Customizable lap distances, Rest time between laps, HealthKit integration for Activity rings, Data export to CSV

**Features:** Apple Watch app

**In-app purchases:** none


### Interval Timer for HIIT | Cero

[App page](https://appshunter.io/ios/app/interval-timer-for-hiit-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 My LapTimer free?

My LapTimer costs $0.99, with no in-app purchases.

### Is Interval Timer for HIIT | Cero free?

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

### Do My LapTimer or Interval Timer for HIIT | Cero have ads?

Interval Timer for HIIT | Cero shows ads; My LapTimer does not.

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

My LapTimer ships an update fortnightly, and Interval Timer for HIIT | Cero every 3 days. Most recently, My LapTimer was updated on October 24, 2026 and Interval Timer for HIIT | Cero on October 24, 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.*