# Interval Workout Timer vs FulwaveTimer

The clearest difference is iOS requirement: Interval Workout Timer at 15.1 against FulwaveTimer's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Interval Workout Timer sells 3 in-app purchases, starting at $2.49 per month and FulwaveTimer sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Workout Timer ships an update every 3 days, FulwaveTimer every 4 days. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Interval Workout Timer | FulwaveTimer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 50 MB | 11 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [YU HUA CHEOK](https://appshunter.io/developer/1889741662) | [Phillip Fuller](https://appshunter.io/developer/6790439746) |

## What reviewers say

### Interval Workout Timer

[App page](https://appshunter.io/ios/app/interval-workout-timer-block/id6761449890)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Block Timer Pro | $2.49 | per month |
| Block Timer Pro | $11.99 | per year |
| Lifetime Premium | $31.99 | one-time |


### FulwaveTimer

[App page](https://appshunter.io/ios/app/fulwavetimer/id6790439744)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fulwave Pro (Monthly) | $0.99 | per month |
| Fulwave Pro (Lifetime) | $29.99 | one-time |


## Frequently asked questions

### Is Interval Workout Timer free?

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

### Is FulwaveTimer free?

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

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

Neither Interval Workout Timer nor FulwaveTimer shows ads.

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

Interval Workout Timer ships an update every 3 days, and FulwaveTimer every 4 days. Most recently, Interval Workout Timer was updated on October 3, 2026 and FulwaveTimer on October 19, 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.*