I've extracted the key and text from your input. The key is 'Free for iOS download YouTube Video Downloader Pro 6.7.2', which seems to be a software title.

The text appears to be a description of various video downloading and converting softwares, along with their features and benefits. Here's a breakdown:

1. Robin YouTube Video Downloader Pro (6.7.2) - A handy toolkit that allows you to download videos from YouTube and other media sites.

2. SynciOS - An ultimate file transfer solution between PC and iOS devices, allowing you to download videos from 100+ video sharing sites.

3. iTubeGo - Audio and video download, conversion, and editing software available on Windows, Mac, and Android platforms.

4. MacX Video Converter Pro - A fast 4K video processing software that compresses HD/4K videos by up to 90% while preserving quality.

The text also mentions other features such as:

* Reducing 4K/HD video file size

* Upscaling HD to 4K for sharper images

* Supporting various audio formats (MP3, WMA, OGG, etc.)

* Compatible with multiple devices (iPhone, iPad, iPod, Apple TV, Android, Samsung, HTC, Sony, Blackberry, LG, Wii, etc.)

Lastly, the text mentions a free trial offer for one of the software products.

Free for ios download YouTube Video Downloader Pro 6.7.2