# Book Guard. vs Audissey

The clearest difference is in-app purchases: Book Guard. at none against Audissey's 1. Book Guard. also leads on ads (none vs shown) and iOS requirement (13.0 vs 26.5). On price, update cadence and device support there is nothing between them.

Both are free to download. Audissey sells 1 one-off in-app purchase. Book Guard. asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Book Guard. | Audissey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | Every 2 days |
| Size | 76 MB | 389 MB |
| Requires iOS | **13.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tqnia for Information Technology](https://appshunter.io/developer/1533657655) | [Won O Soft](https://appshunter.io/developer/329958815) |

## What reviewers say

### Book Guard.

[App page](https://appshunter.io/ios/app/book-guard/id6747822466)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### 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 Book Guard. free?

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

### Is Audissey free?

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

### Do Book Guard. or Audissey have ads?

Audissey shows ads; Book Guard. does not.

### Which is updated more often, Book Guard. or Audissey?

Book Guard. ships an update every 2 days, and Audissey every 2 days. Most recently, Book Guard. was updated on September 20, 2026 and Audissey on September 9, 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.*