# 易错词库 vs 字音字形

The clearest difference is iOS requirement: 字音字形 at 12.0 against 易错词库's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 易错词库 sells 1 one-off in-app purchase and 字音字形 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 11 days. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 易错词库 | 字音字形 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | Every 11 days |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 39 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [尧 魏](https://appshunter.io/developer/1658434412) | [文丽 雷](https://appshunter.io/developer/1796404645) |

## What reviewers say

### 易错词库

[App page](https://appshunter.io/ios/app/id6450763094)

This app helps students eliminate errors in Chinese characters, pinyin, and idioms. It offers a comprehensive dictionary of commonly mistaken words and provides learning materials from educational websites to boost Chinese language proficiency for exams.

**Highlights:** 3000+ common error words dictionary, Curated educational materials, High-frequency updates, Authoritative dictionary definitions, Save and favorite words for review

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP 服务 | $0.99 | one-time |


### 字音字形

[App page](https://appshunter.io/ios/app/id6746492204)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 字音字形终身会员 | $0.99 | one-time |


## Frequently asked questions

### Is 易错词库 free?

易错词库 is free to download, with in-app purchases available.

### Is 字音字形 free?

字音字形 is free to download, with in-app purchases available.

### Do 易错词库 or 字音字形 have ads?

Neither 易错词库 nor 字音字形 shows ads.

### Which is updated more often, 易错词库 or 字音字形?

易错词库 ships an update every 11 days, and 字音字形 every 11 days. Most recently, 易错词库 was updated on September 17, 2026 and 字音字形 on September 15, 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.*