# HIIT Timer vs インターバルタイマーforトレーニング3

The clearest difference is in-app purchases: HIIT Timer at none against インターバルタイマーforトレーニング3's 1. インターバルタイマーforトレーニング3's advantage is update cadence (every 9 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. インターバルタイマーforトレーニング3 sells 1 in-app purchase, starting at $0.49 per month. HIIT Timer asks for nothing beyond the download.

HIIT Timer ships an update every 5 months, インターバルタイマーforトレーニング3 every 9 days. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | HIIT Timer | インターバルタイマーforトレーニング3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 9 days** |
| Size | 24 MB | 12 MB |
| Requires iOS | **16.1** | 17.6 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoshikazu Takahashi](https://appshunter.io/developer/1557592781) | [Yudai Fukuda](https://appshunter.io/developer/1434814836) |

## What reviewers say

### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer/id1557592779)

**In-app purchases:** none


### インターバルタイマーforトレーニング3

[App page](https://appshunter.io/ios/app/for3/id6670382090)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.49 | per month |


## Frequently asked questions

### Is HIIT Timer free?

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

### Is インターバルタイマーforトレーニング3 free?

インターバルタイマーforトレーニング3 is free to download, with in-app purchases available.

### Do HIIT Timer or インターバルタイマーforトレーニング3 have ads?

Both HIIT Timer and インターバルタイマーforトレーニング3 show ads.

### Which is updated more often, HIIT Timer or インターバルタイマーforトレーニング3?

HIIT Timer ships an update every 5 months, and インターバルタイマーforトレーニング3 every 9 days. Most recently, HIIT Timer was updated on September 13, 2026 and インターバルタイマーforトレーニング3 on September 15, 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.*