best 5 rummy apps: understanding the rules and strategieswhat is rummy 786 app. rummy 786 app is an online rummy app. the 786 in the title refers to a sacred thing and a lucky number. this will bring luck to many rummy players who are playing betting games on the rummy 786 app. also, the app is very secure, so you can download and signup on to the rummy 786 app to get started there. check teen