# 4000基础必备英语单词4 vs ChessCoach

The clearest difference is price: ChessCoach at Free against 4000基础必备英语单词4's $0.99. ChessCoach also leads on update cadence (every 4 days vs every 2 months). 4000基础必备英语单词4's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

ChessCoach is free to download; 4000基础必备英语单词4 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

4000基础必备英语单词4 ships an update every 2 months, ChessCoach every 4 days. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 4000基础必备英语单词4 | ChessCoach |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 191 MB | 21 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [水生 王](https://appshunter.io/developer/1587470458) | [INPHIL CHOI](https://appshunter.io/developer/6785766361) |

## What reviewers say

### 4000基础必备英语单词4

[App page](https://appshunter.io/ios/app/40004/id1640444012)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChessCoach

[App page](https://appshunter.io/ios/app/chesscoach-learn-chess/id6807283401)

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

**In-app purchases:** none


## Frequently asked questions

### Is 4000基础必备英语单词4 free?

4000基础必备英语单词4 costs $0.99, with no in-app purchases.

### Is ChessCoach free?

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

### Do 4000基础必备英语单词4 or ChessCoach have ads?

ChessCoach shows ads; 4000基础必备英语单词4 does not.

### Which is updated more often, 4000基础必备英语单词4 or ChessCoach?

4000基础必备英语单词4 ships an update every 2 months, and ChessCoach every 4 days. Most recently, 4000基础必备英语单词4 was updated on September 30, 2026 and ChessCoach on October 11, 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.*