# 墨库 vs 交你飞

The clearest difference is in-app purchases: 墨库 at none against 交你飞's 5. 墨库 also leads on update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 交你飞 sells 5 one-off in-app purchases. 墨库 asks for nothing beyond the download.

墨库 ships an update monthly, 交你飞 every 2 months. The most recent releases landed on October 7, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 墨库 | 交你飞 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 167 MB | 51 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [中华商务贸易公司](https://appshunter.io/developer/1512128906) | [上海交通大学出版社有限公司](https://appshunter.io/developer/667356292) |

## What reviewers say

### 墨库

[App page](https://appshunter.io/ios/app/id1550737280)

**Features:** macOS Compatibility

**In-app purchases:** none


### 交你飞

[App page](https://appshunter.io/ios/app/id6445837006)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1阅读币 | $0.99 | one-time |
| 108阅读币 | $14.99 | one-time |
| 128阅读币 | $19.99 | one-time |
| 268阅读币 | $39.99 | one-time |
| 588阅读币 | $79.99 | one-time |


## Frequently asked questions

### Is 墨库 free?

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

### Is 交你飞 free?

交你飞 is free to download, with in-app purchases available.

### Do 墨库 or 交你飞 have ads?

Neither 墨库 nor 交你飞 shows ads.

### Which is updated more often, 墨库 or 交你飞?

墨库 ships an update monthly, and 交你飞 every 2 months. Most recently, 墨库 was updated on October 7, 2026 and 交你飞 on September 22, 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.*