# VoxFlow vs KoolPDF

The clearest difference is iOS requirement: KoolPDF at 15.5 against VoxFlow's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | VoxFlow | KoolPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 2 MB | 60 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BIT Technology ltd.](https://appshunter.io/developer/1462299131) | [Agevole Innovation Private Limited](https://appshunter.io/developer/1866840663) |

## What reviewers say

### VoxFlow

[App page](https://appshunter.io/ios/app/voxflow-voice-ai-notes/id6760209368)

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

**In-app purchases:** none


### KoolPDF

[App page](https://appshunter.io/ios/app/koolpdf-pdf-tools-and-reader/id6778038829)

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

**In-app purchases:** none


## Frequently asked questions

### Is VoxFlow free?

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

### Is KoolPDF free?

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

### Do VoxFlow or KoolPDF have ads?

Neither VoxFlow nor KoolPDF 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.*