# 错题plus vs 七天学伴

The clearest difference is review sentiment: 错题plus at 95% against 七天学伴's 20%. 七天学伴's advantage is in-app purchases (none vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 错题plus sells 4 one-off in-app purchases. 七天学伴 asks for nothing beyond the download.

错题plus ships an update every 6 weeks, 七天学伴 every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 错题plus | 七天学伴 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (5 ratings)](https://appshunter.io/ios/app/id1499983860/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | **95.0% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| 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) | [安徽七天网络科技有限公司](https://appshunter.io/developer/1239085124) |

## 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 |


### 七天学伴

[App page](https://appshunter.io/ios/app/id1499983860)

**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 七天学伴 free?

七天学伴 is free to download, with no in-app purchases.

### Do 错题plus or 七天学伴 have ads?

Neither 错题plus nor 七天学伴 shows ads.

### Which is updated more often, 错题plus or 七天学伴?

错题plus ships an update every 6 weeks, and 七天学伴 every 2 months. Most recently, 错题plus was updated on October 6, 2026 and 七天学伴 on October 15, 2026.

---

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