# Nota6 vs PDF Compressor

The clearest difference is in-app purchases: Nota6 at none against PDF Compressor's 1. Nota6 also leads on ads (none vs shown) and update cadence (every 3 days vs every 4 months). PDF Compressor's advantage is iOS requirement (13.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. PDF Compressor sells 1 one-off in-app purchase. Nota6 asks for nothing beyond the download.

Nota6 ships an update every 3 days, PDF Compressor every 4 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Nota6 | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 4 months |
| Size | 11 MB | 50 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [笑天 刘](https://appshunter.io/developer/1845977493) | [STE DIGI VIBES](https://appshunter.io/developer/1769242851) |

## What reviewers say

### Nota6

[App page](https://appshunter.io/ios/app/nota6/id6771324417)

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-merge-and-scan/id6782072361)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.99 | one-time |


## Frequently asked questions

### Is Nota6 free?

Nota6 is free to download, with no in-app purchases.

### Is PDF Compressor free?

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

### Do Nota6 or PDF Compressor have ads?

PDF Compressor shows ads; Nota6 does not.

### Which is updated more often, Nota6 or PDF Compressor?

Nota6 ships an update every 3 days, and PDF Compressor every 4 months. Most recently, Nota6 was updated on October 31, 2026 and PDF Compressor on October 31, 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.*