# LibriY vs Sumi Book

The clearest difference is in-app purchases: LibriY at none against Sumi Book's 3. Sumi Book's advantage is iOS requirement (15.1 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sumi Book sells 3 in-app purchases, starting at $3.99 per month. LibriY asks for nothing beyond the download.

LibriY ships an update every 8 days, Sumi Book every 4 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LibriY | Sumi Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Size | 2 MB | 51 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Arian Toghyani](https://appshunter.io/developer/1440322811) | [Oktay Demir](https://appshunter.io/developer/6777725671) |

## What reviewers say

### LibriY

[App page](https://appshunter.io/ios/app/libriy/id6754006681)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sumi Book

[App page](https://appshunter.io/ios/app/sumi-book/id6777730252)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Fine Press — Monthly | $3.99 | per month |
| The Fine Press — Annual | $24.99 | per year |
| The Fine Press — Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is LibriY free?

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

### Is Sumi Book free?

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

### Do LibriY or Sumi Book have ads?

Neither LibriY nor Sumi Book shows ads.

### Which is updated more often, LibriY or Sumi Book?

LibriY ships an update every 8 days, and Sumi Book every 4 days. Most recently, LibriY was updated on October 16, 2026 and Sumi Book 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.*