# Sticky vs PDF Document Editor, Read Book

The clearest difference is in-app purchases: Sticky at none against PDF Document Editor, Read Book's 6. PDF Document Editor, Read Book's advantage is update cadence (every 9 days vs every 47 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Document Editor, Read Book sells 6 in-app purchases, starting at $1.99 per 7 days. Sticky asks for nothing beyond the download.

Sticky ships an update every 47 months, PDF Document Editor, Read Book every 9 days. The most recent releases landed on September 19, 2026 and December 13, 2025 respectively.

## The numbers

| Metric | Sticky | PDF Document Editor, Read Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 9 days** |
| Size | 0 MB | 33 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Baebeca Solutions GmbH](https://appshunter.io/developer/1648630732) | [Oleksandr Bilyk](https://appshunter.io/developer/1588574362) |

## What reviewers say

### Sticky

[App page](https://appshunter.io/ios/app/sticky/id6443714805)

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

**In-app purchases:** none


### PDF Document Editor, Read Book

[App page](https://appshunter.io/ios/app/pdf-document-editor-read-book/id6504371765)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Editor: PDF Reader, Sign | $1.99 | per 7 days |
| PDF Editor: PDF Reader, Sign | $2.99 | per 7 days |
| PDF Editor: PDF Reader, Sign | $5.99 | per month |
| PDF Editor: PDF Reader, Sign | $6.99 | per month |
| PDF Editor: PDF Reader, Sign | $24.99 | per year |
| PDF Editor: PDF Reader, Sign | $34.99 | per year |


## Frequently asked questions

### Is Sticky free?

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

### Is PDF Document Editor, Read Book free?

PDF Document Editor, Read Book is free to download, with in-app purchases available.

### Do Sticky or PDF Document Editor, Read Book have ads?

Neither Sticky nor PDF Document Editor, Read Book shows ads.

### Which is updated more often, Sticky or PDF Document Editor, Read Book?

Sticky ships an update every 47 months, and PDF Document Editor, Read Book every 9 days. Most recently, Sticky was updated on September 19, 2026 and PDF Document Editor, Read Book on December 13, 2025.

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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.*