Xilisoft YouTube to iPad Converter is a commercial video downloader. It can be used to download and optionally convert videos from YouTube into files that can be played by the iPad. The application can convert files into H.264, MPEG-4, MP3, and WAV files. So, you can also use the app to convert videos on YouTube to music files that you can play on any device. The video files converted with this app will be playable on the iPad and any other Apple device.
Graphically, Xilisoft YouTube to iPad Converter sports a very nice interface that is easy to understand and use. The main window shows the YouTube home page, from where you can search, browse and watch videos without downloading them. If you want to download a video, you simply have to select its quality (360p, 720p, etc) and click on the download button on the toolbar at the top of the screen. By default, files will be converted to H.264, but you can change the format from a drop-down menu at the bottom, or choose not to convert files at all, which renders the app into a downloader only.
In my testing, I was able to download several videos and convert them into H.264 with no problems. The app was fast throughout my time with it and very responsive.