I've developed my first android app in eclipse. I'm new to using eclipse so hopefully this is an easy question. I would like to make a free supported version and a paid ad-free version so 99% of the code will be the same. Also, I think I can create maybe 3 different apps repeating about 75% of the code. If I have free and paid version, now its 6 projects to maintain. I know I can just copy the project and make the changes, but is there a way I can share the code. That way if I have a bug fix, I don't have to repeat my work six times.