# 勉強の計画や復習管理 vs E

The clearest difference is ads: E at none against 勉強の計画や復習管理's shown. E also leads on update cadence (every 2 weeks vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

勉強の計画や復習管理 ships an update every 5 months, E every 2 weeks. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 勉強の計画や復習管理 | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 16 MB | 62 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masaya Kato](https://appshunter.io/developer/458867341) | [Eisuke Togashi](https://appshunter.io/developer/592398746) |

## What reviewers say

### 勉強の計画や復習管理

[App page](https://appshunter.io/ios/app/id1640394074)

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-sensor/id6760690492)

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

**In-app purchases:** none


## Frequently asked questions

### Is 勉強の計画や復習管理 free?

勉強の計画や復習管理 is free to download, with no in-app purchases.

### Is E free?

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

### Do 勉強の計画や復習管理 or E have ads?

勉強の計画や復習管理 shows ads; E does not.

### Which is updated more often, 勉強の計画や復習管理 or E?

勉強の計画や復習管理 ships an update every 5 months, and E every 2 weeks. Most recently, 勉強の計画や復習管理 was updated on September 23, 2026 and E on September 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.*