# ReadSync vs SimpPDF Reader

The clearest difference is in-app purchases: SimpPDF Reader at none against ReadSync's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | ReadSync | SimpPDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Daily |
| Size | 4 MB | 1 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alper Albayrak](https://appshunter.io/developer/993200227) | [Wei He](https://appshunter.io/developer/6783615797) |

## What reviewers say

### 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 |


### SimpPDF Reader

[App page](https://appshunter.io/ios/app/simppdf-reader/id6783615795)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReadSync free?

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

### Is SimpPDF Reader free?

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

### Do ReadSync or SimpPDF Reader have ads?

Neither ReadSync nor SimpPDF Reader 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.*