# フラッシュ英文法 vs JunJun

The clearest difference is iOS requirement: フラッシュ英文法 at 17.0 against JunJun's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | フラッシュ英文法 | JunJun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Size | 37 MB | 17 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Nakakuki Masaya](https://appshunter.io/developer/1610313307) | [Jun Oyamada](https://appshunter.io/developer/6798144460) |

## What reviewers say

### フラッシュ英文法

[App page](https://appshunter.io/ios/app/id6475672834)

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

**In-app purchases:** none


### JunJun

[App page](https://appshunter.io/ios/app/junjun-study-community/id6798144458)

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

**In-app purchases:** none


## Frequently asked questions

### Is フラッシュ英文法 free?

フラッシュ英文法 is free to download, with no in-app purchases.

### Is JunJun free?

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

### Do フラッシュ英文法 or JunJun have ads?

Neither フラッシュ英文法 nor JunJun shows ads.

### Which is updated more often, フラッシュ英文法 or JunJun?

フラッシュ英文法 ships an update every 2 days, and JunJun every 2 days. Most recently, フラッシュ英文法 was updated on October 9, 2026 and JunJun on October 14, 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.*