# PDF Editor vs ReadSync

The clearest difference is in-app purchases: PDF Editor at none against ReadSync's 1. PDF Editor also leads on update cadence (every 9 days vs every 2 months) and iOS requirement (15.0 vs 18.0). ReadSync's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ReadSync sells 1 one-off in-app purchase. PDF Editor asks for nothing beyond the download.

PDF Editor ships an update every 9 days, ReadSync every 2 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PDF Editor | ReadSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/pdf-editor-fill-sign-and-scan/id6760214266/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 30 MB | 4 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [军 夏](https://appshunter.io/developer/1852160579) | [Alper Albayrak](https://appshunter.io/developer/993200227) |

## What reviewers say

### PDF Editor

[App page](https://appshunter.io/ios/app/pdf-editor-fill-sign-and-scan/id6760214266)

Edit, sign, and fill PDF documents with ease. This app allows you to add text, signatures, and annotations, and convert files to various formats. It offers a private and secure experience with on-device processing for most features.

**Highlights:** Sign documents with finger or Apple Pencil, Add text, checkmarks, and shapes, Highlight, underline, and strikethrough text, Convert PDFs to Word, images, and vice versa, Compress, merge, and split PDFs, Password protection for PDFs

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

**In-app purchases:** none


### ReadSync

[App page](https://appshunter.io/ios/app/readsync-pdf-reader/id6761561640)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $19.99 | one-time |


## Frequently asked questions

### Is PDF Editor free?

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

### Is ReadSync free?

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

### Do PDF Editor or ReadSync have ads?

PDF Editor shows ads; ReadSync does not.

### Which is updated more often, PDF Editor or ReadSync?

PDF Editor ships an update every 9 days, and ReadSync every 2 months. Most recently, PDF Editor was updated on October 6, 2026 and ReadSync on October 8, 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.*