# Zoundy vs Sumi Book

The clearest difference is in-app purchases: Zoundy at none against Sumi Book's 3. Zoundy also leads on iOS requirement (13.0 vs 15.1). Sumi Book's advantage is update cadence (every 5 days vs every 4 months). On price, 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. Zoundy asks for nothing beyond the download.

Zoundy ships an update every 4 months, Sumi Book every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Zoundy | Sumi Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/zoundy/id6469012011/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 37 MB | 53 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Blisstech, Inc.](https://appshunter.io/developer/1711287313) | [Oktay Demir](https://appshunter.io/developer/6777725671) |

## What reviewers say

### Zoundy

[App page](https://appshunter.io/ios/app/zoundy/id6469012011)

Access a library of free audiobooks and discover new authors. Enjoy exclusive content through a leading mobile application designed for audiobook listeners.

**Highlights:** Free audiobooks, Discover new authors, Exclusive content, Mobile app access, Industry-leading platform

**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, iPhone Duo 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 Zoundy free?

Zoundy 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 Zoundy or Sumi Book have ads?

Neither Zoundy nor Sumi Book shows ads.

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

Zoundy ships an update every 4 months, and Sumi Book every 5 days. Most recently, Zoundy was updated on November 3, 2026 and Sumi Book on November 5, 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.*