# 成语词典 vs 错题plus

The clearest difference is in-app purchases: 成语词典 at none against 错题plus's 4. 成语词典 also leads on iOS requirement (9.0 vs 12.0). 错题plus's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 12 months). On price and device support there is nothing between them.

Both are free to download. 错题plus sells 4 one-off in-app purchases. 成语词典 asks for nothing beyond the download.

成语词典 ships an update every 12 months, 错题plus every 6 weeks. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 成语词典 | 错题plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/id1342087434/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | — | 95.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 6 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 57 MB | 48 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [小龙 胡](https://appshunter.io/developer/1330483737) | [上海启本信息科技有限公司](https://appshunter.io/developer/1476015216) |

## What reviewers say

### 成语词典

[App page](https://appshunter.io/ios/app/id1342087434)

A simple and easy-to-use idiom dictionary that supports searching by characters at the beginning or end of a name. Save idioms for review and access offline data anytime, anywhere.

**Highlights:** Search by character start/end, Save favorite idioms, Offline access, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases:** none


### 错题plus

[App page](https://appshunter.io/ios/app/plus/id1476015217)

This app helps students manage and review their mistakes. It allows you to scan and organize incorrect answers, receive personalized study plans, and access micro-lessons and practice problems based on your weak areas. It aims to improve learning through targeted review and reinforcement.

**Highlights:** Scan and organize incorrect answers, AI-powered problem solving and explanations, Personalized study plans, Micro-lessons for knowledge points, Extensive question bank, Printable practice sheets and custom exams

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 首月优惠价 | $1.99 | one-time |
| VIP包月 | $9.99 | one-time |
| 团购VIP包年 | $49.99 | one-time |
| VIP包年 | $59.99 | one-time |


## Frequently asked questions

### Is 成语词典 free?

成语词典 is free to download, with no in-app purchases.

### Is 错题plus free?

错题plus is free to download, with in-app purchases available.

### Do 成语词典 or 错题plus have ads?

成语词典 shows ads; 错题plus does not.

### Which is updated more often, 成语词典 or 错题plus?

成语词典 ships an update every 12 months, and 错题plus every 6 weeks. Most recently, 成语词典 was updated on October 3, 2026 and 错题plus on October 6, 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.*