# 墨間 vs Inspan Book Reader

The clearest difference is in-app purchases: Inspan Book Reader at none against 墨間's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 墨間 sells 1 one-off in-app purchase. Inspan Book Reader asks for nothing beyond the download.

墨間 ships an update every 4 days, Inspan Book Reader every 2 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 墨間 | Inspan Book Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 62 MB | 35 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Kong NG](https://appshunter.io/developer/6806903600) | [Nikolay Vorobyev](https://appshunter.io/developer/6803159557) |

## What reviewers say

### 墨間

[App page](https://appshunter.io/ios/app/id6806903598)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 墨間進階版 | $4.99 | one-time |


### Inspan Book Reader

[App page](https://appshunter.io/ios/app/inspan-book-reader/id6814143093)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 墨間 free?

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

### Is Inspan Book Reader free?

Inspan Book Reader is free to download, with no in-app purchases.

### Do 墨間 or Inspan Book Reader have ads?

Neither 墨間 nor Inspan Book Reader shows ads.

### Which is updated more often, 墨間 or Inspan Book Reader?

墨間 ships an update every 4 days, and Inspan Book Reader every 2 days. Most recently, 墨間 was updated on October 26, 2026 and Inspan Book Reader on October 24, 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.*