# Train Clock vs 音ボタン SoundBtn

The clearest difference is in-app purchases: Train Clock at none against 音ボタン SoundBtn's 1. Train Clock also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.0). 音ボタン SoundBtn's advantage is update cadence (weekly vs every 23 months). On price and device support there is nothing between them.

Both are free to download. 音ボタン SoundBtn sells 1 one-off in-app purchase. Train Clock asks for nothing beyond the download.

Train Clock ships an update every 23 months, 音ボタン SoundBtn weekly. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Train Clock | 音ボタン SoundBtn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Weekly** |
| Size | 143 MB | 60 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [hiroyuki uchida](https://appshunter.io/developer/669938829) | [JiaYuan Yu](https://appshunter.io/developer/6800308304) |

## What reviewers say

### Train Clock

[App page](https://appshunter.io/ios/app/train-clock/id1097870845)

**In-app purchases:** none


### 音ボタン SoundBtn

[App page](https://appshunter.io/ios/app/soundbtn/id6807745902)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $1.99 | one-time |


## Frequently asked questions

### Is Train Clock free?

Train Clock is free to download, with no in-app purchases.

### Is 音ボタン SoundBtn free?

音ボタン SoundBtn is free to download, with in-app purchases available.

### Do Train Clock or 音ボタン SoundBtn have ads?

音ボタン SoundBtn shows ads; Train Clock does not.

### Which is updated more often, Train Clock or 音ボタン SoundBtn?

Train Clock ships an update every 23 months, and 音ボタン SoundBtn weekly. Most recently, Train Clock was updated on November 11, 2026 and 音ボタン SoundBtn on November 10, 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.*