I quit my last job and don't do SEO anymore, but this job is about App marketing,I know nothing about App marketing. Is there somebody know some nice ways to promote App? Our app is not about game, it helps transfer files from PC to mobile devices or transfer files from mobile devices to PC, but without USB cable or Third-party storage. Is there some nice ways to promote it? At the same time, I am also considering how to promote it on Pinterest? Any reply will be appreciated, thanks in advance!