I'm currently developing an app for iOS and maybe Android if I can be bothered to change the features for Android which I probably will.
It's a level app , I won't go into detail but i'll tell you what I need your thoughts for.
I am making 16 more levels to make my app have 40 levels which will take probably the rest of today and tomorrow but here is where you reply with your thoughts.
It will have ads because it will be free.
If the game gets enough attention (I hope it will with a new marketing technique I am testing) I will add new levels but the question is whether to make it paid and update it or leave it free and update it.
If you want to see what it looks like currently tell me if I should do a quick join.me