# MicBridge vs PDF Duo

The clearest difference is in-app purchases: PDF Duo at none against MicBridge's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MicBridge sells 2 in-app purchases, starting at $1.99 per month. PDF Duo asks for nothing beyond the download.

## The numbers

| Metric | MicBridge | PDF Duo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 3 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ka Ming Ho](https://appshunter.io/developer/1888722804) | [Alano Tech Pte. Ltd.](https://appshunter.io/developer/1884779159) |

## What reviewers say

### MicBridge

[App page](https://appshunter.io/ios/app/micbridge/id6785257709)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MicBridge Pro | $1.99 | per month |
| MicBridge Pro (Lifetime) | $19.99 | one-time |


### 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 MicBridge free?

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

### Is PDF Duo free?

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

### Do MicBridge or PDF Duo have ads?

Neither MicBridge 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.*