# 正規表現(Regular Expression) vs React Quiz

The clearest difference is in-app purchases: 正規表現(Regular Expression) at none against React Quiz's 3. React Quiz's advantage is update cadence (monthly vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. React Quiz sells 3 in-app purchases, starting at $0.99 per 7 days. 正規表現(Regular Expression) asks for nothing beyond the download.

正規表現(Regular Expression) ships an update every 8 months, React Quiz monthly. The most recent releases landed on September 26, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 正規表現(Regular Expression) | React Quiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Monthly** |
| Size | 14 MB | 83 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Sato](https://appshunter.io/developer/1514602166) | [Creatopia Inc.](https://appshunter.io/developer/1523447963) |

## What reviewers say

### 正規表現(Regular Expression)

[App page](https://appshunter.io/ios/app/regular-expression/id1529795657)

**Features:** macOS Compatibility

**In-app purchases:** none


### React Quiz

[App page](https://appshunter.io/ios/app/react-quiz-learn-with-ai/id6739236583)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $0.99 | per 7 days |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $24.99 | per year |


## Frequently asked questions

### Is 正規表現(Regular Expression) free?

正規表現(Regular Expression) is free to download, with no in-app purchases.

### Is React Quiz free?

React Quiz is free to download, with in-app purchases available.

### Do 正規表現(Regular Expression) or React Quiz have ads?

Both 正規表現(Regular Expression) and React Quiz show ads.

### Which is updated more often, 正規表現(Regular Expression) or React Quiz?

正規表現(Regular Expression) ships an update every 8 months, and React Quiz monthly. Most recently, 正規表現(Regular Expression) was updated on September 26, 2026 and React Quiz on October 9, 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.*