# 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 vs Shower Oath

The clearest difference is in-app purchases: Shower Oath at none against 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中's 1. Shower Oath also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 sells 1 in-app purchase, starting at $2.99 per month. Shower Oath asks for nothing beyond the download.

推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 ships an update every 3 weeks, Shower Oath weekly. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 | Shower Oath |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 92.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 38 MB | 48 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [shigeki suzuki](https://appshunter.io/developer/1492704516) | [Ocean Masaoki Nishimura](https://appshunter.io/developer/6778775409) |

## What reviewers say

### 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中

[App page](https://appshunter.io/ios/app/id6447010146)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 推しと集中タイマー　プレミアムプラン1ヶ月 | $2.99 | per month |


### Shower Oath

[App page](https://appshunter.io/ios/app/shower-oath-app-blocker/id6790764403)

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

**In-app purchases:** none


## Frequently asked questions

### Is 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 free?

推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 is free to download, with in-app purchases available.

### Is Shower Oath free?

Shower Oath is free to download, with no in-app purchases.

### Do 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 or Shower Oath have ads?

推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 shows ads; Shower Oath does not.

### Which is updated more often, 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 or Shower Oath?

推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 ships an update every 3 weeks, and Shower Oath weekly. Most recently, 推しと勉強タイマー　推しと一緒に勉強、トレーニングに集中 was updated on October 4, 2026 and Shower Oath on October 11, 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.*