This app was mentioned in 1 comment, with an average of 1.00 upvote
My app, Cocktails Guru https://play.google.com/store/apps/details?id=com.guru.cocktails has almost 100k downloads and 4,64 rating with over 1,600 ratings. In my opinion if you want to have good rating, you need to have good app. If you want to have good app , your app should solve some real life problem of users. Once you have app which solves problems of users, listen to them and ask them for feedback, implement features which they asked for. And than last thing is to ask for rating,because users are mostly lazy guys which give you rating only once they are pissed :D So what i do i that i ask users for rating. Thats it. And app should not crash of course.