# Sumi Book vs Audissey

The clearest difference is ads: Sumi Book at none against Audissey's shown. Sumi Book also leads on iOS requirement (15.1 vs 26.5). Audissey's advantage is update cadence (every 2 days vs every 5 days). On price, in-app purchases 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 and Audissey sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sumi Book ships an update every 5 days, Audissey every 2 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Sumi Book | Audissey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 60 MB | 362 MB |
| Requires iOS | **15.1** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Oktay Demir](https://appshunter.io/developer/6777725671) | [Won O Soft](https://appshunter.io/developer/329958815) |

## What reviewers say

### 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 |


### Audissey

[App page](https://appshunter.io/ios/app/audissey-web-audio-reader/id6784635190)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audissey Pro | $8.99 | one-time |


## Frequently asked questions

### Is Sumi Book free?

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

### Is Audissey free?

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

### Do Sumi Book or Audissey have ads?

Audissey shows ads; Sumi Book does not.

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

Sumi Book ships an update every 5 days, and Audissey every 2 days. Most recently, Sumi Book was updated on November 10, 2026 and Audissey on November 10, 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.*