# 外研双语悦读 vs 墨库

The clearest difference is in-app purchases: 墨库 at none against 外研双语悦读's 5. 墨库 also leads on update cadence (monthly vs every 5 months). 外研双语悦读's advantage is iOS requirement (10.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. 外研双语悦读 sells 5 one-off in-app purchases. 墨库 asks for nothing beyond the download.

外研双语悦读 ships an update every 5 months, 墨库 monthly. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 外研双语悦读 | 墨库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 69 MB | 167 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TouchV](https://appshunter.io/developer/873883887) | [中华商务贸易公司](https://appshunter.io/developer/1512128906) |

## What reviewers say

### 外研双语悦读

[App page](https://appshunter.io/ios/app/id1492041982)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6阅读币 | $0.99 | one-time |
| 12阅读币 | $1.99 | one-time |
| 18阅读币 | $2.99 | one-time |
| 30阅读币 | $3.99 | one-time |
| 25阅读币 | $3.99 | one-time |


### 墨库

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 外研双语悦读 free?

外研双语悦读 is free to download, with in-app purchases available.

### Is 墨库 free?

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

### Do 外研双语悦读 or 墨库 have ads?

Neither 外研双语悦读 nor 墨库 shows ads.

### Which is updated more often, 外研双语悦读 or 墨库?

外研双语悦读 ships an update every 5 months, and 墨库 monthly. Most recently, 外研双语悦读 was updated on September 29, 2026 and 墨库 on October 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.*