# 错题星 vs 168网校

The clearest difference is in-app purchases: 168网校 at none against 错题星's 16. 错题星's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 错题星 sells 15 one-off in-app purchases. 168网校 asks for nothing beyond the download.

错题星 ships an update every 3 weeks, 168网校 every 2 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 错题星 | 168网校 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 95 MB | 106 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [武汉未来之星人工智能科技有限公司](https://appshunter.io/developer/1770241827) | [Shaanxi 168 network technology co. LTD](https://appshunter.io/developer/1501851394) |

## What reviewers say

### 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 |


### 168网校

[App page](https://appshunter.io/ios/app/168/id1615137459)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 错题星 free?

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

### Is 168网校 free?

168网校 is free to download, with no in-app purchases.

### Do 错题星 or 168网校 have ads?

168网校 shows ads; 错题星 does not.

### Which is updated more often, 错题星 or 168网校?

错题星 ships an update every 3 weeks, and 168网校 every 2 weeks. Most recently, 错题星 was updated on October 13, 2026 and 168网校 on October 4, 2026.

---

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