# FB2 Audio AI Reader vs Book Guard.

The clearest difference is in-app purchases: Book Guard. at none against FB2 Audio AI Reader's 2. Book Guard. also leads on update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FB2 Audio AI Reader sells 2 in-app purchases, starting at $7.00 per month. Book Guard. asks for nothing beyond the download.

FB2 Audio AI Reader ships an update weekly, Book Guard. every 2 days. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FB2 Audio AI Reader | Book Guard. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Size | 30 MB | 81 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Sunpoint IT Solution](https://appshunter.io/developer/1698476347) | [Tqnia for Information Technology](https://appshunter.io/developer/1533657655) |

## What reviewers say

### FB2 Audio AI Reader

[App page](https://appshunter.io/ios/app/fb2-audio-ai-reader/id6747178862)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Access | $7.00 | per month |
| Premium Yearly Access | $70.00 | per year |


### Book Guard.

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

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

**In-app purchases:** none


## Frequently asked questions

### Is FB2 Audio AI Reader free?

FB2 Audio AI Reader is free to download, with in-app purchases available.

### Is Book Guard. free?

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

### Do FB2 Audio AI Reader or Book Guard. have ads?

Neither FB2 Audio AI Reader nor Book Guard. shows ads.

### Which is updated more often, FB2 Audio AI Reader or Book Guard.?

FB2 Audio AI Reader ships an update weekly, and Book Guard. every 2 days. Most recently, FB2 Audio AI Reader was updated on October 25, 2026 and Book Guard. on October 30, 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.*