# WI Timer vs Interval Timer・HIIT Timer

The clearest difference is in-app purchases: WI Timer at none against Interval Timer・HIIT Timer's 2. Interval Timer・HIIT Timer's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer・HIIT Timer sells 2 in-app purchases, starting at $2.99 per month. WI Timer asks for nothing beyond the download.

WI Timer ships an update every 2 days, Interval Timer・HIIT Timer every 4 days. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | WI Timer | Interval Timer・HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 28 MB | 74 MB |
| Requires iOS | **14.3** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yeeun seo](https://appshunter.io/developer/1634215603) | [Reva Desai](https://appshunter.io/developer/1780266324) |

## What reviewers say

### WI Timer

[App page](https://appshunter.io/ios/app/wi-timer/id6448949564)

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

**In-app purchases:** none


### Interval Timer・HIIT Timer

[App page](https://appshunter.io/ios/app/interval-timerhiit-timer/id6748070178)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Access | $2.99 | per month |
| Premium Yearly Access | $19.99 | per year |


## Frequently asked questions

### Is WI Timer free?

WI Timer is free to download, with no in-app purchases.

### Is Interval Timer・HIIT Timer free?

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

### Do WI Timer or Interval Timer・HIIT Timer have ads?

WI Timer shows ads; Interval Timer・HIIT Timer does not.

### Which is updated more often, WI Timer or Interval Timer・HIIT Timer?

WI Timer ships an update every 2 days, and Interval Timer・HIIT Timer every 4 days. Most recently, WI Timer was updated on October 5, 2026 and Interval Timer・HIIT Timer on October 6, 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.*