# PDF Compressor ・ PDF Converter vs IsonAI

The clearest difference is in-app purchases: IsonAI at none against PDF Compressor ・ PDF Converter's 10. IsonAI also leads on ads (none vs shown). PDF Compressor ・ PDF Converter's advantage is update cadence (every 5 days vs fortnightly) and iOS requirement (15.6 vs 17.0). On price and device support there is nothing between them.

Both are free to download. PDF Compressor ・ PDF Converter sells 9 in-app purchases, starting at $4.99 per 7 days. IsonAI asks for nothing beyond the download.

PDF Compressor ・ PDF Converter ships an update every 5 days, IsonAI fortnightly. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PDF Compressor ・ PDF Converter | IsonAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (70 ratings)](https://appshunter.io/ios/app/pdf-compressor-pdf-converter/id6742428142/reviews)** | — |
| Number of ratings | **70** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [RIJIPUPS OU](https://appshunter.io/developer/1594002879) | [Dimas Wibisono](https://appshunter.io/developer/1892365235) |

## What reviewers say

### PDF Compressor ・ PDF Converter

[App page](https://appshunter.io/ios/app/pdf-compressor-pdf-converter/id6742428142)

Easily convert, scan, compress, and edit documents into PDFs. This tool offers smart camera features for accurate scanning, flexible compression options to save space, and the ability to merge or convert files. Keep your documents organized and secure with password protection.

**Highlights:** Convert photos, files, and scans to PDF, Smart camera for auto-detection and cropping, Compress PDFs with quality settings, Merge multiple PDFs, Convert PDFs to JPG or ZIP, Password protect sensitive documents, Edit and reorder PDF pages

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Converter PRO | $4.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $7.99 | per 7 days |
| PDF Converter PRO | $11.99 | per month |
| PDF Converter PRO | $19.99 | per month |
| PDF Converter PRO | $99.99 | per year |
| PDF Converter PRO | $119.99 | per year |


### IsonAI

[App page](https://appshunter.io/ios/app/isonai/id6761997078)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Compressor ・ PDF Converter free?

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

### Is IsonAI free?

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

### Do PDF Compressor ・ PDF Converter or IsonAI have ads?

PDF Compressor ・ PDF Converter shows ads; IsonAI does not.

### Which is updated more often, PDF Compressor ・ PDF Converter or IsonAI?

PDF Compressor ・ PDF Converter ships an update every 5 days, and IsonAI fortnightly. Most recently, PDF Compressor ・ PDF Converter was updated on October 9, 2026 and IsonAI on October 10, 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.*