TiP Daily April 18, 2013: A photo is circulating that allegedly depicts the back of Apple's low cost iPhone, Twitter finally launched its #Music application, and more! - Auxo for iPad: http://tinyurl.com/d6fh9ul - Twitter #Muisc: http://tinyurl.com/d7f7tfp - Low cost iPhone leak: http://tinyurl.com/bvgjssa - Follow me on...