# MuscleTrainingTimer vs HIIT Timer

The clearest difference is update cadence: HIIT Timer at weekly against MuscleTrainingTimer's every 2 months. HIIT Timer also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MuscleTrainingTimer sells 1 one-off in-app purchase and HIIT Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MuscleTrainingTimer ships an update every 2 months, HIIT Timer weekly. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | MuscleTrainingTimer | HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 19 MB | 44 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ryo muranaka](https://appshunter.io/developer/1606480078) | [Junhyong Park](https://appshunter.io/developer/1847163468) |

## What reviewers say

### MuscleTrainingTimer

[App page](https://appshunter.io/ios/app/muscletrainingtimer-exercise/id6446249318)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $19.99 | one-time |


### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-tabata-and-boxing/id6755115302)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $1.99 | one-time |


## Frequently asked questions

### Is MuscleTrainingTimer free?

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

### Is HIIT Timer free?

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

### Do MuscleTrainingTimer or HIIT Timer have ads?

Neither MuscleTrainingTimer nor HIIT Timer shows ads.

### Which is updated more often, MuscleTrainingTimer or HIIT Timer?

MuscleTrainingTimer ships an update every 2 months, and HIIT Timer weekly. Most recently, MuscleTrainingTimer was updated on October 15, 2026 and HIIT Timer on October 13, 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.*