In 2009, at age 15, following a report by CNN[2] Nelson gained attention in the media for developing the Muziic[3][4] streaming music application.
[citation needed] David later went on to found FanRx (formerly BandRx[6]) in 2012, a social media software company for musicians and brands.
In 2013, Nelson launched Mass Threat, a game development subsidiary of FanRx, catering to the music industry.
In November 2015, Nelson unveiled Motion AI on Product Hunt, where it was number one for the day and earned a top spot in the all-time rankings.
[10] In 2015, Nelson proposed to his girlfriend Chelsea on stage at a Train show in the Bahamas, following an introduction from Pat Monahan.