# 正規表現(Regular Expression) vs 速習英単語

The clearest difference is ads: 速習英単語 at none against 正規表現(Regular Expression)'s shown. 速習英単語 also leads on update cadence (daily vs every 8 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.

正規表現(Regular Expression) ships an update every 8 months, 速習英単語 daily. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 正規表現(Regular Expression) | 速習英単語 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Daily** |
| Monetization | — | Free |
| Size | 14 MB | 31 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Sato](https://appshunter.io/developer/1514602166) | [StudyPeaks](https://appshunter.io/developer/901134689) |

## 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


### 速習英単語

[App page](https://appshunter.io/ios/app/id6581484543)

Master essential vocabulary for the Common Test with this app. It efficiently teaches 2140 frequently appearing English words, offering audio, example sentences, and targeted review of words you find difficult. Ideal for students aiming to improve their English scores.

**Highlights:** Learn 2140 essential vocabulary words, Focus on Common Test frequent words, Efficient and fast memorization, Includes audio pronunciation, Provides example sentences, Reviews only difficult words

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

**In-app purchases:** none


## 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 速習英単語 free?

速習英単語 is free to download, with no in-app purchases.

### Do 正規表現(Regular Expression) or 速習英単語 have ads?

正規表現(Regular Expression) shows ads; 速習英単語 does not.

### Which is updated more often, 正規表現(Regular Expression) or 速習英単語?

正規表現(Regular Expression) ships an update every 8 months, and 速習英単語 daily. Most recently, 正規表現(Regular Expression) was updated on September 26, 2026 and 速習英単語 on October 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.*