# echoEnglish3 vs Plain850：核心英文 850詞

The clearest difference is update cadence: Plain850：核心英文 850詞 at every 2 weeks against echoEnglish3's every 5 months. Plain850：核心英文 850詞 also leads on iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

echoEnglish3 ships an update every 5 months, Plain850：核心英文 850詞 every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | echoEnglish3 | Plain850：核心英文 850詞 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 9 MB | 43 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [甲烯 郭](https://appshunter.io/developer/1895383435) | [Lok Wai](https://appshunter.io/developer/1895320924) |

## What reviewers say

### echoEnglish3

[App page](https://appshunter.io/ios/app/echoenglish3/id6764214055)

**Features:** macOS Compatibility

**In-app purchases:** none


### Plain850：核心英文 850詞

[App page](https://appshunter.io/ios/app/plain850-850/id6776902920)

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

**In-app purchases:** none


## Frequently asked questions

### Is echoEnglish3 free?

echoEnglish3 is free to download, with no in-app purchases.

### Is Plain850：核心英文 850詞 free?

Plain850：核心英文 850詞 is free to download, with no in-app purchases.

### Do echoEnglish3 or Plain850：核心英文 850詞 have ads?

Neither echoEnglish3 nor Plain850：核心英文 850詞 shows ads.

### Which is updated more often, echoEnglish3 or Plain850：核心英文 850詞?

echoEnglish3 ships an update every 5 months, and Plain850：核心英文 850詞 every 2 weeks. Most recently, echoEnglish3 was updated on October 31, 2026 and Plain850：核心英文 850詞 on October 31, 2026.

---

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