# do!bookⅡ vs MetaMoJi Share Viewer 6

The clearest difference is update cadence: MetaMoJi Share Viewer 6 at monthly against do!bookⅡ's every 2 months. do!bookⅡ's advantage is iOS requirement (9.0 vs 13.6). 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.

do!bookⅡ ships an update every 2 months, MetaMoJi Share Viewer 6 monthly. The most recent releases landed on September 14, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | do!bookⅡ | MetaMoJi Share Viewer 6 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 21 MB | 266 MB |
| Requires iOS | **9.0** | 13.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Digital Office  Japan  Inc.](https://appshunter.io/developer/348581782) | [MetaMoJi Corporation](https://appshunter.io/developer/449808118) |

## What reviewers say

### do!bookⅡ

[App page](https://appshunter.io/ios/app/dobook/id599472647)

**Features:** macOS Compatibility

**In-app purchases:** none


### MetaMoJi Share Viewer 6

[App page](https://appshunter.io/ios/app/metamoji-share-viewer-6/id1574412989)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is do!bookⅡ free?

do!bookⅡ is free to download, with no in-app purchases.

### Is MetaMoJi Share Viewer 6 free?

MetaMoJi Share Viewer 6 is free to download, with no in-app purchases.

### Do do!bookⅡ or MetaMoJi Share Viewer 6 have ads?

Neither do!bookⅡ nor MetaMoJi Share Viewer 6 shows ads.

### Which is updated more often, do!bookⅡ or MetaMoJi Share Viewer 6?

do!bookⅡ ships an update every 2 months, and MetaMoJi Share Viewer 6 monthly. Most recently, do!bookⅡ was updated on September 14, 2026 and MetaMoJi Share Viewer 6 on August 14, 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.*