Diversify. The mobile app market is very volatile, and you don't want to put your eggs in one basket. As many others suggest here you probably want to make a fe

Diversify. The mobile app market is very volatile, and you don't want to put your eggs in one basket. As many others suggest here you probably want to make a few other apps which have traction just in case your big one fails. There's a lot going against you as time goes on. Other people roll out apps, technology changes which could suddenly cut your income -- so yea, highly recommend you diversify.