MediaProSoft Free YouTube to MP4 Converter is a video downloader and converter. It can download videos from YouTube.com and then convert them to MP4 files, which are playable on most devices. The app consists of a wizard that guides you through a couple steps to start the download and then convert the resulting file. But you don't have to download and convert the file in the same operation, you can simply use the app to convert files or download videos separately.
To download a video, simply select that option in the main window and then all you have to do is paste a video URL from YouTube. You can select different video quality options at the next step. Sadly, when I tried the downloader, it didn't work. All I got was a message saying that the downloads failed.
The video converter also uses a wizard for the process. You add the video or videos that you want to convert and click on "next". During the next step, you decide what format you want to convert them to. Although you see MP4 in this app's title, you can also convert files to AVI, FLV, MPEG, RM, WMV and 3GP, and there are quite a few conversion profiles for devices like iPods, iPhones, iPads, etc.
All in all, this is a free app that has a broken YouTube downloader and a decent video converter.