# Interval Timer HIIT Workout vs Simple Boxing Timer USA

The clearest difference is ads: Simple Boxing Timer USA at none against Interval Timer HIIT Workout's shown. Simple Boxing Timer USA also leads on review sentiment (100% vs 67%) and update cadence (every 3 days vs weekly). Interval Timer HIIT Workout's advantage is ratings volume (344 vs 1) and iOS requirement (18.0 vs 26.5). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month and Simple Boxing Timer USA sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

Simple Boxing Timer USA holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Interval Timer HIIT Workout has 344 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Interval Timer HIIT Workout's written reviews are positive against 100% of Simple Boxing Timer USA's.

Interval Timer HIIT Workout ships an update weekly, Simple Boxing Timer USA every 3 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Interval Timer HIIT Workout | Simple Boxing Timer USA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (344 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-workout/id6741055716/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-boxing-timer-usa/id6797891424/reviews)** |
| Number of ratings | **344** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 99 MB | 9 MB |
| Requires iOS | **18.0** | 26.5 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roli LLC](https://appshunter.io/developer/1792785559) | [Tom Molinaro](https://appshunter.io/developer/6792363329) |

## What reviewers say

### Interval Timer HIIT Workout

[App page](https://appshunter.io/ios/app/interval-timer-hiit-workout/id6741055716)

This app provides customizable interval timers for HIIT, Tabata, and circuit training. It features AI voice cues from celebrity impersonations, music integration, and automatic syncing with Apple Health and Apple Watch for comprehensive workout tracking.

**Highlights:** Customizable HIIT & Tabata timers, AI voice cues from celebrity impersonations, Music integration without interruption, Convert social media workouts to follow-alongs, Syncs with Apple Health & Apple Watch, Save and organize custom workouts, On-screen exercise cues

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Yearly Subscription | $29.99 | per year |
| One Time Purchase | $19.99 | one-time |


### Simple Boxing Timer USA

[App page](https://appshunter.io/ios/app/simple-boxing-timer-usa/id6797891424)

This app provides a customizable interval timer for boxing, kickboxing, MMA, and circuit training. Easily adjust rounds, break times, and warning cues with a one-tap start. Save presets and track your workout history with optional voice announcements and sound options.

**Highlights:** One-tap start, Customizable rounds and breaks, Save up to 3 presets free, Voice announcements, Workout history logging, Lock screen live activity

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Past Workouts | $2.99 | per year |


## Frequently asked questions

### Is Interval Timer HIIT Workout free?

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

### Is Simple Boxing Timer USA free?

Simple Boxing Timer USA is free to download, with in-app purchases available.

### Which has better reviews, Interval Timer HIIT Workout or Simple Boxing Timer USA?

Simple Boxing Timer USA is rated higher. Interval Timer HIIT Workout averages 4.8 out of 5 from 344 ratings, while Simple Boxing Timer USA averages 5.0 from 1 ratings.

### Do Interval Timer HIIT Workout or Simple Boxing Timer USA have ads?

Interval Timer HIIT Workout shows ads; Simple Boxing Timer USA does not.

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

Interval Timer HIIT Workout ships an update weekly, and Simple Boxing Timer USA every 3 days. Most recently, Interval Timer HIIT Workout was updated on November 8, 2026 and Simple Boxing Timer USA on October 31, 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.*