# Knowuro reader vs PDF to Books

Knowuro reader and PDF to Books are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Knowuro reader | PDF to Books |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/pdf-to-books/id6755252784/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Monetization | — | Free |
| Size | 24 MB | 4 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Knowuro](https://appshunter.io/developer/1728721237) | [Michael Fahim](https://appshunter.io/developer/1454932033) |

## What reviewers say

### Knowuro reader

[App page](https://appshunter.io/ios/app/knowuro-reader/id6477208617)

**In-app purchases:** none


### PDF to Books

[App page](https://appshunter.io/ios/app/pdf-to-books/id6755252784)

Transform your PDFs into a beautiful, organized digital library with realistic page-turning animations and a comfortable reading experience. Features include smart annotation tools, advanced reading modes, and cross-device syncing. Your documents are stored locally for maximum privacy.

**Highlights:** Realistic page curl animation, Comfortable dark mode, Cross-device syncing, Automatic book cover generation, Smart annotation suite, Advanced reading modes

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

**In-app purchases:** none


## Frequently asked questions

### Is Knowuro reader free?

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

### Is PDF to Books free?

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

### Do Knowuro reader or PDF to Books have ads?

Neither Knowuro reader nor PDF to Books shows ads.

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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.*