# 青书(西北工业版) vs 凡亿课堂

青书(西北工业版) and 凡亿课堂 are too close to call on the numbers: across 3 compared parameters — price, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 青书(西北工业版) | 凡亿课堂 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Size | 63 MB | 49 MB |
| Requires iOS | 12.0 | 12.0 |
| Age rating | 4+ | 17+ |
| Developer | [青颖飞帆](https://appshunter.io/developer/507851198) | [Hunan Fanyi Zhibang Electronic Technology Co., Ltd.](https://appshunter.io/developer/1743762852) |

## What reviewers say

### 青书(西北工业版)

[App page](https://appshunter.io/ios/app/id916114205)

**In-app purchases:** none


### 凡亿课堂

[App page](https://appshunter.io/ios/app/id6499520543)

**In-app purchases:** none


## Frequently asked questions

### Is 青书(西北工业版) free?

青书(西北工业版) is free to download, with no in-app purchases.

### Is 凡亿课堂 free?

凡亿课堂 is free to download, with no in-app purchases.

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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.*