Synclify will be a FREE app for iOS (will later be optimized for Android) that allows you to create and share playlists of your favorite YouTube videos with friends. Connect with your social circle through Facebook and collaboratively add videos to a group. Discover what's popular among your peers, and stay up to date with the latest trends. Download supported videos within seconds using a WiFi/3G/4G/LTE connection. Users can also create tags for public playlists. Playlists that consist of tags would appear using the "Synclify Search" function rather than "YouTube search."
Facebook page: www.facebook.com/SynclifyMobileApp