# Sumi Book vs LeafWave

The clearest difference is in-app purchases: LeafWave at none against Sumi Book's 3. Sumi Book's advantage is iOS requirement (15.1 vs 17.0). 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. LeafWave asks for nothing beyond the download.

Sumi Book ships an update every 3 days, LeafWave every 4 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sumi Book | LeafWave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/leafwave/id6792042577/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | — | Freemium |
| Size | 49 MB | 266 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Oktay Demir](https://appshunter.io/developer/6777725671) | [Samik Banerjee](https://appshunter.io/developer/6792042579) |

## What reviewers say

### 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 |


### LeafWave

[App page](https://appshunter.io/ios/app/leafwave/id6792042577)

This app allows you to read and listen to books and documents, offering customizable reading experiences and on-device narration. It supports various file formats and provides tools for annotation and sharing, with a strong focus on user privacy.

**Highlights:** Import EPUB, PDF, text, and more, Switch between visual reading and narration, On-device narration for privacy and offline use, Adjustable text size, spacing, and themes, Add bookmarks and highlights, Export annotated documents, Access free public-domain titles

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

**In-app purchases:** none


## Frequently asked questions

### Is Sumi Book free?

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

### Is LeafWave free?

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

### Do Sumi Book or LeafWave have ads?

Neither Sumi Book nor LeafWave shows ads.

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

Sumi Book ships an update every 3 days, and LeafWave every 4 days. Most recently, Sumi Book was updated on October 13, 2026 and LeafWave on October 7, 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.*