# 错题plus vs 少年得到知识星球

The clearest difference is in-app purchases: 少年得到知识星球 at none against 错题plus's 4. 少年得到知识星球 also leads on update cadence (every 9 days vs every 6 weeks). 错题plus's advantage is review sentiment (95% vs 83%) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 错题plus sells 4 one-off in-app purchases. 少年得到知识星球 asks for nothing beyond the download.

错题plus ships an update every 6 weeks, 少年得到知识星球 every 9 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 错题plus | 少年得到知识星球 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **95.0% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 63 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [上海启本信息科技有限公司](https://appshunter.io/developer/1476015216) | [酷得少年(天津)文化传播有限公司](https://appshunter.io/developer/1279715324) |

## What reviewers say

### 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 |


### 少年得到知识星球

[App page](https://appshunter.io/ios/app/id6781651812)

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

**In-app purchases:** none


## Frequently asked questions

### Is 错题plus free?

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

### Is 少年得到知识星球 free?

少年得到知识星球 is free to download, with no in-app purchases.

### Do 错题plus or 少年得到知识星球 have ads?

Neither 错题plus nor 少年得到知识星球 shows ads.

### Which is updated more often, 错题plus or 少年得到知识星球?

错题plus ships an update every 6 weeks, and 少年得到知识星球 every 9 days. Most recently, 错题plus was updated on October 6, 2026 and 少年得到知识星球 on October 24, 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.*