# Interval Timer for HIIT | Cero vs Disposable Timer+

The clearest difference is rating: Interval Timer for HIIT | Cero at 4.7 against Disposable Timer+'s 4.2. Interval Timer for HIIT | Cero also leads on update cadence (every 3 days vs every 10 months) and ratings volume (441 vs 14). Disposable Timer+'s advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Interval Timer for HIIT | Cero sells 2 in-app purchases, starting at $2.99 per month and Disposable Timer+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Interval Timer for HIIT | Cero holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Interval Timer for HIIT | Cero has 441 ratings behind it against 14, so its average is the more settled of the two.

Interval Timer for HIIT | Cero ships an update every 3 days, Disposable Timer+ every 10 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Interval Timer for HIIT | Cero | Disposable Timer+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (441 ratings)](https://appshunter.io/ios/app/interval-timer-for-hiit-cero/id1256319392/reviews)** | [4.2 (14 ratings)](https://appshunter.io/ios/app/disposable-timer-plus/id1491661491/reviews) |
| Number of ratings | **441** | 14 |
| Positive reviews | 74.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 10 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 21 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) | [Thang Nguyen](https://appshunter.io/developer/921360262) |

## What reviewers say

### Interval Timer for HIIT | Cero

[App page](https://appshunter.io/ios/app/interval-timer-for-hiit-cero/id1256319392)

Create custom interval workouts for HIIT, Tabata, and circuit training. This app offers detailed programming with custom intervals, colors, and icons. Stay focused with large controls, clear cues, and optional heart rate training.

**Highlights:** Customizable interval programming, Heart rate training integration, Live Activities and Dynamic Island support, Siri and Shortcuts integration, Workout history and calorie tracking, Apple Watch app, Shareable timers

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo 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


### Disposable Timer+

[App page](https://appshunter.io/ios/app/disposable-timer-plus/id1491661491)

Manage multiple timers and stopwatches simultaneously for various daily tasks. This app allows you to create, label, and reuse timers with customizable durations and gentle or funny alarms. It runs in the background, freeing you to use other applications while keeping track of your timed activities.

**Highlights:** Run multiple timers and stopwatches simultaneously, Create, label, and reuse custom timers, Timers run in the background, Repeat timers up to 100 times, Gentle and funny alarm options, Sleek and simple interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $4.99 | one-time |


## Frequently asked questions

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

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

### Is Disposable Timer+ free?

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

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

Interval Timer for HIIT | Cero is rated higher. Interval Timer for HIIT | Cero averages 4.7 out of 5 from 441 ratings, while Disposable Timer+ averages 4.2 from 14 ratings.

### Do Interval Timer for HIIT | Cero or Disposable Timer+ have ads?

Both Interval Timer for HIIT | Cero and Disposable Timer+ show ads.

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

Interval Timer for HIIT | Cero ships an update every 3 days, and Disposable Timer+ every 10 months. Most recently, Interval Timer for HIIT | Cero was updated on November 11, 2026 and Disposable Timer+ on November 3, 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.*