# Unitify Converter vs PDF Duo

Unitify Converter and PDF Duo are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unitify Converter | PDF Duo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Omer Rahmanovic](https://appshunter.io/developer/1508177919) | [Alano Tech Pte. Ltd.](https://appshunter.io/developer/1884779159) |

## What reviewers say

### Unitify Converter

[App page](https://appshunter.io/ios/app/unitify-converter/id1508177920)

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Duo

[App page](https://appshunter.io/ios/app/pdf-duo-edit-sign-and-fill/id6826920121)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unitify Converter free?

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

### Is PDF Duo free?

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

### Do Unitify Converter or PDF Duo have ads?

Neither Unitify Converter nor PDF Duo 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.*