# Mobile Bookshelf vs Cocoas

The clearest difference is in-app purchases: Cocoas at none against Mobile Bookshelf's 2. Cocoas also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mobile Bookshelf sells 2 in-app purchases, starting at $0.99 per month. Cocoas asks for nothing beyond the download.

Mobile Bookshelf ships an update every 2 months, Cocoas every 3 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Mobile Bookshelf | Cocoas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 37 MB | 38 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kouten motoki](https://appshunter.io/developer/1604200923) | [KOJI ASAMIZU](https://appshunter.io/developer/1821761089) |

## What reviewers say

### Mobile Bookshelf

[App page](https://appshunter.io/ios/app/mobile-bookshelf-reading-log/id6744626194)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Plan | $0.99 | per month |
| Advance Plan | $1.99 | per month |


### Cocoas

[App page](https://appshunter.io/ios/app/cocoas/id6747536759)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mobile Bookshelf free?

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

### Is Cocoas free?

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

### Do Mobile Bookshelf or Cocoas have ads?

Neither Mobile Bookshelf nor Cocoas shows ads.

### Which is updated more often, Mobile Bookshelf or Cocoas?

Mobile Bookshelf ships an update every 2 months, and Cocoas every 3 weeks. Most recently, Mobile Bookshelf was updated on October 15, 2026 and Cocoas on October 3, 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.*