Description: ProTube allows you to easily download audio (.mp3) or video (.mp4) straight to your device
Developer: Jonas Gessner
If you are a youtube-addict, this is a must have cydia tweak. To download video from youtube to iPhone, simply open ProTube cydia app → load up the video → tap small icon at the bottom right corner → tap Download → select Video and it will be saved on iPhone. The same thing if you want to convert youtube to mp3 on iPhone directly, just load up the video → tap small icon at the bottom right corner → tap Download → select Audio and the mp3 file will be saved on iPhone.