# インターバルタイマーforトレーニング2 Pro vs MuscleTrainingTimer

The clearest difference is price: MuscleTrainingTimer at Free against インターバルタイマーforトレーニング2 Pro's $3.99. MuscleTrainingTimer also leads on ads (none vs shown). インターバルタイマーforトレーニング2 Pro's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.0). On update cadence and device support there is nothing between them.

MuscleTrainingTimer is free to download; インターバルタイマーforトレーニング2 Pro costs $3.99 up front. MuscleTrainingTimer sells 1 one-off in-app purchase. インターバルタイマーforトレーニング2 Pro asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | インターバルタイマーforトレーニング2 Pro | MuscleTrainingTimer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Size | 29 MB | 19 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Fukuda](https://appshunter.io/developer/1434814836) | [ryo muranaka](https://appshunter.io/developer/1606480078) |

## What reviewers say

### インターバルタイマーforトレーニング2 Pro

[App page](https://appshunter.io/ios/app/for2-pro/id1449228185)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is インターバルタイマーforトレーニング2 Pro free?

インターバルタイマーforトレーニング2 Pro costs $3.99, with no in-app purchases.

### Is MuscleTrainingTimer free?

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

### Do インターバルタイマーforトレーニング2 Pro or MuscleTrainingTimer have ads?

インターバルタイマーforトレーニング2 Pro shows ads; MuscleTrainingTimer does not.

### Which is updated more often, インターバルタイマーforトレーニング2 Pro or MuscleTrainingTimer?

インターバルタイマーforトレーニング2 Pro ships an update every 2 months, and MuscleTrainingTimer every 2 months. Most recently, インターバルタイマーforトレーニング2 Pro was updated on October 12, 2026 and MuscleTrainingTimer on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*