# ARune! plus vs 知ってる知らない？英単語

The clearest difference is update cadence: 知ってる知らない？英単語 at every 2 days against ARune! plus's every 2 weeks. ARune! plus's advantage is device support (3 vs 1). On price, ads, in-app purchases 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.

ARune! plus ships an update every 2 weeks, 知ってる知らない？英単語 every 2 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ARune! plus | 知ってる知らない？英単語 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 408 MB | 38 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ichishin Wingnet Co.,Ltd.](https://appshunter.io/developer/957773197) | [Masashi Saito](https://appshunter.io/developer/1045097101) |

## What reviewers say

### ARune! plus

[App page](https://appshunter.io/ios/app/arune-plus/id1529397545)

**Features:** macOS Compatibility

**In-app purchases:** none


### 知ってる知らない？英単語

[App page](https://appshunter.io/ios/app/id6790971845)

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

**In-app purchases:** none


## Frequently asked questions

### Is ARune! plus free?

ARune! plus is free to download, with no in-app purchases.

### Is 知ってる知らない？英単語 free?

知ってる知らない？英単語 is free to download, with no in-app purchases.

### Do ARune! plus or 知ってる知らない？英単語 have ads?

Neither ARune! plus nor 知ってる知らない？英単語 shows ads.

### Which is updated more often, ARune! plus or 知ってる知らない？英単語?

ARune! plus ships an update every 2 weeks, and 知ってる知らない？英単語 every 2 days. Most recently, ARune! plus was updated on October 6, 2026 and 知ってる知らない？英単語 on October 7, 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.*