# Interval vs HIIT Workout Timer

The clearest difference is update cadence: HIIT Workout Timer at monthly against Interval's every 2 months. HIIT Workout Timer also leads on iOS requirement (17.0 vs 26.0). Interval's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Interval sells 1 one-off in-app purchase and HIIT Workout Timer sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Interval ships an update every 2 months, HIIT Workout Timer monthly. The most recent releases landed on September 15, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Interval | HIIT Workout Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 78 MB | 11 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Felix Thron](https://appshunter.io/developer/1868228169) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Interval

[App page](https://appshunter.io/ios/app/interval-workout-timer/id6761282472)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro | $3.99 | one-time |


### HIIT Workout Timer

[App page](https://appshunter.io/ios/app/hiit-workout-timer-tabata/id6772269676)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |
| Lifetime Pro | $29.99 | one-time |


## Frequently asked questions

### Is Interval free?

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

### Is HIIT Workout Timer free?

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

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

Neither Interval nor HIIT Workout Timer shows ads.

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

Interval ships an update every 2 months, and HIIT Workout Timer monthly. Most recently, Interval was updated on September 15, 2026 and HIIT Workout Timer on August 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.*