# Simple HIIT vs FulwaveTimer

The clearest difference is in-app purchases: Simple HIIT at none against FulwaveTimer's 2. Simple HIIT also leads on iOS requirement (13.0 vs 17.6). FulwaveTimer's advantage is update cadence (every 4 days vs every 31 months). On price, ads and device support there is nothing between them.

Both are free to download. FulwaveTimer sells 2 in-app purchases, starting at $0.99 per month. Simple HIIT asks for nothing beyond the download.

Simple HIIT ships an update every 31 months, FulwaveTimer every 4 days. The most recent releases landed on October 22, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Simple HIIT | FulwaveTimer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 2 MB | 11 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Beesoft Apps](https://appshunter.io/developer/1420966143) | [Phillip Fuller](https://appshunter.io/developer/6790439746) |

## What reviewers say

### Simple HIIT

[App page](https://appshunter.io/ios/app/simple-hiit-interval-timer/id6449968373)

This interval timer app helps you manage work and rest periods for various high-intensity interval training (HIIT) workouts. It offers customizable settings for sets, intervals, and rest times, and can run in the background even when the screen is locked.

**Highlights:** Customizable sets and intervals, Background operation with screen locked, Save settings as templates, Adjustable countdown timer, Pause during rest option, Vibrate and timer sound options

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

**In-app purchases:** none


### 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 Simple HIIT free?

Simple HIIT is free to download, with no in-app purchases.

### Is FulwaveTimer free?

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

### Do Simple HIIT or FulwaveTimer have ads?

Neither Simple HIIT nor FulwaveTimer shows ads.

### Which is updated more often, Simple HIIT or FulwaveTimer?

Simple HIIT ships an update every 31 months, and FulwaveTimer every 4 days. Most recently, Simple HIIT was updated on October 22, 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.*