I think you should program for iOS first. Think about a company like Instagram, they made the app for only iPhone users, then it became popular. Once the app wa

I think you should program for iOS first. Think about a company like Instagram, they made the app for only iPhone users, then it became popular. Once the app was released for Android, millions of people downloaded it in less than 24 hours. In my opinion iOS apps gets more attention then Android apps. Android apps aren't a bad place to start though, there are some really good Android apps I use everyday.