# 橙果作业 vs 错题星

The clearest difference is in-app purchases: 橙果作业 at none against 错题星's 10. 橙果作业 also leads on update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 错题星 sells 10 one-off in-app purchases. 橙果作业 asks for nothing beyond the download.

橙果作业 ships an update every 4 days, 错题星 every 3 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 橙果作业 | 错题星 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 87 MB | 95 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杭州数橙科技有限公司](https://appshunter.io/developer/1240025661) | [武汉未来之星人工智能科技有限公司](https://appshunter.io/developer/1770241827) |

## What reviewers say

### 橙果作业

[App page](https://appshunter.io/ios/app/id1448019665)

**Features:** Vision Pro support

**In-app purchases:** none


### 错题星

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

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2年会员（原价） | $39.99 | one-time |
| 12个月SVIP | $39.99 | 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 |
| 终身SVIP（优惠） | $149.99 | one-time |
| 终身SVIP | $399.99 | one-time |


## Frequently asked questions

### Is 橙果作业 free?

橙果作业 is free to download, with no in-app purchases.

### Is 错题星 free?

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

### Do 橙果作业 or 错题星 have ads?

Neither 橙果作业 nor 错题星 shows ads.

### Which is updated more often, 橙果作业 or 错题星?

橙果作业 ships an update every 4 days, and 错题星 every 3 weeks. Most recently, 橙果作业 was updated on November 2, 2026 and 错题星 on November 7, 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.*