There are many applications available that can download YouTube videos for free. The most rated and most popular among them is ‘TubeMate’. Just follow the easy steps mentioned and download any YouTube video you need: • Go to the security settings of your device and make unknown sources option ‘Enable.’ • Use the given link and get TubeMate apk from ACMarket. • Complete installing TubeMate. • Open it, browse videos and download videos in any format you need.