# js vs Wiki Quick Study｜アシストシステム

The clearest difference is device support: js at 3 against Wiki Quick Study｜アシストシステム's —. js also leads on iOS requirement (13.0 vs 15.6). On price 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.

## The numbers

| Metric | js | Wiki Quick Study｜アシストシステム |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Size | 1 MB | 25 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 9+ | 4+ |
| Developer | [Hiroyuki Nakano](https://appshunter.io/developer/1091174971) | [Tsuyoshi Hayakawa](https://appshunter.io/developer/314516929) |

## What reviewers say

### js

[App page](https://appshunter.io/ios/app/js-star/id1382126067)

**Features:** macOS Compatibility

**In-app purchases:** none


### Wiki Quick Study｜アシストシステム

[App page](https://appshunter.io/ios/app/wiki-quick-study/id6755429456)

**In-app purchases:** none


## Frequently asked questions

### Is js free?

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

### Is Wiki Quick Study｜アシストシステム free?

Wiki Quick Study｜アシストシステム is free to download, with no in-app purchases.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*