# 错题plus vs 错题星

错题plus and 错题星 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 错题plus sells 4 one-off in-app purchases and 错题星 sells 15 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

错题plus ships an update every 6 weeks, 错题星 every 3 weeks. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 错题plus | 错题星 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 48 MB | 95 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Shanghai Qiben Information Technology Co., Ltd.](https://appshunter.io/developer/1476015216) | [武汉未来之星人工智能科技有限公司](https://appshunter.io/developer/1770241827) |

## What reviewers say

### 错题plus

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

**Features:** macOS Compatibility

**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 |


### 错题星

[App page](https://appshunter.io/ios/app/ai/id1602483511)

**Features:** macOS Compatibility

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $3.99 | one-time |
| 12个月会员（优惠） | $26.99 | one-time |
| 1年会员（原价） | $29.99 | one-time |
| 2年会员（原价） | $39.99 | one-time |
| 12个月SVIP | $39.99 | one-time |
| 36个月会员（优惠） | $46.99 | one-time |
| 48个月SVIP | $59.99 | one-time |
| 72个月SVIP | $59.99 | one-time |
| 72个月VIP | $59.99 | one-time |
| 60个月SVIP | $59.99 | one-time |
| 96个月SVIP | $69.99 | one-time |
| 108个月SVIP | $69.99 | one-time |
| 36个月 | $109.99 | one-time |
| 终身SVIP（优惠） | $149.99 | one-time |
| 终身SVIP | $399.99 | one-time |


## Frequently asked questions

### Is 错题plus free?

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

### Is 错题星 free?

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

### Do 错题plus or 错题星 have ads?

Neither 错题plus nor 错题星 shows ads.

### Which is updated more often, 错题plus or 错题星?

错题plus ships an update every 6 weeks, and 错题星 every 3 weeks. Most recently, 错题plus was updated on September 12, 2026 and 错题星 on September 9, 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.*