# Custom Interval Workout Timer vs Interval Timer

The clearest difference is update cadence: Interval Timer at every 9 days against Custom Interval Workout Timer's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month and Interval Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Custom Interval Workout Timer ships an update every 3 weeks, Interval Timer every 9 days. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Custom Interval Workout Timer | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 7 MB | 69 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael McGill apps llc](https://appshunter.io/developer/1874084552) | [Katsunobu Sunagawa](https://appshunter.io/developer/6795139232) |

## What reviewers say

### Custom Interval Workout Timer

[App page](https://appshunter.io/ios/app/custom-interval-workout-timer/id6759209042)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $19.99 | per year |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-focus-and-hiit/id6795139230)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro | $1.99 | one-time |


## Frequently asked questions

### Is Custom Interval Workout Timer free?

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

### Is Interval Timer free?

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

### Do Custom Interval Workout Timer or Interval Timer have ads?

Both Custom Interval Workout Timer and Interval Timer show ads.

### Which is updated more often, Custom Interval Workout Timer or Interval Timer?

Custom Interval Workout Timer ships an update every 3 weeks, and Interval Timer every 9 days. Most recently, Custom Interval Workout Timer was updated on September 30, 2026 and Interval Timer on October 4, 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.*