# 巧学错题本 vs Error Pilot

The clearest difference is iOS requirement: 巧学错题本 at 11.0 against Error Pilot's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 巧学错题本 | Error Pilot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 206 MB | 48 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HuaiAn MaiTuo Network Technology Co. Ltd.](https://appshunter.io/developer/1501829071) | [蒲艳 刘](https://appshunter.io/developer/1566693811) |

## What reviewers say

### 巧学错题本

[App page](https://appshunter.io/ios/app/id1574590505)

**Features:** macOS Compatibility

**In-app purchases:** none


### Error Pilot

[App page](https://appshunter.io/ios/app/error-pilot/id6775493960)

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

**In-app purchases:** none


## Frequently asked questions

### Is 巧学错题本 free?

巧学错题本 is free to download, with no in-app purchases.

### Is Error Pilot free?

Error Pilot is free to download, with no in-app purchases.

### Do 巧学错题本 or Error Pilot have ads?

Neither 巧学错题本 nor Error Pilot shows ads.

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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.*