# e洁洗衣 vs 学而时习之

The clearest difference is in-app purchases: e洁洗衣 at none against 学而时习之's 2. e洁洗衣 also leads on iOS requirement (12.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 学而时习之 sells 2 one-off in-app purchases. e洁洗衣 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | e洁洗衣 | 学而时习之 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1593148033/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 7 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [栩 赵](https://appshunter.io/developer/1491782712) | [红晓 赵](https://appshunter.io/developer/1516558450) |

## What reviewers say

### e洁洗衣

[App page](https://appshunter.io/ios/app/e/id1491782713)

**Features:** macOS Compatibility

**In-app purchases:** none


### 学而时习之

[App page](https://appshunter.io/ios/app/id1593148033)

This app helps improve learning efficiency and memory through scientific brain usage techniques. It offers automatic review reminders for tasks and provides brain science knowledge to enhance understanding and recall.

**Highlights:** Automatic review reminders for learning tasks, Brain science knowledge tips, Customizable learning tasks, Daily task overview reminders, iCloud data synchronization, Reading notes on brain science

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 我是学生(永久会员) | $2.99 | one-time |
| 永久会员 | $3.99 | one-time |


## Frequently asked questions

### Is e洁洗衣 free?

e洁洗衣 is free to download, with no in-app purchases.

### Is 学而时习之 free?

学而时习之 is free to download, with in-app purchases available.

### Do e洁洗衣 or 学而时习之 have ads?

Neither e洁洗衣 nor 学而时习之 shows ads.

### Which is updated more often, e洁洗衣 or 学而时习之?

e洁洗衣 ships an update every 2 months, and 学而时习之 every 2 months. Most recently, e洁洗衣 was updated on October 25, 2026 and 学而时习之 on October 6, 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.*