# Rousd vs Sumi Book

The clearest difference is in-app purchases: Rousd at none against Sumi Book's 3. Sumi Book's advantage is update cadence (every 4 days vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

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

Rousd ships an update every 10 days, Sumi Book every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rousd | Sumi Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Size | 49 MB | 51 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Gordon Brown](https://appshunter.io/developer/1896606217) | [Oktay Demir](https://appshunter.io/developer/6777725671) |

## What reviewers say

### Rousd

[App page](https://appshunter.io/ios/app/rousd/id6768805939)

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

**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 Rousd free?

Rousd 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 Rousd or Sumi Book have ads?

Neither Rousd nor Sumi Book shows ads.

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

Rousd ships an update every 10 days, and Sumi Book every 4 days. Most recently, Rousd was updated on October 25, 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.*