Hey everyone! 
I am building a simple Android app with Android Builder and I have hit a point where I want to add in-app purchases (like removing ads or unlocking premium stuff). Also I have seen a few extensions listed here but I am not sure which one is best for this purpose or if I would be better off creating my own custom extension. 
Has anyone here managed to set up in-app purchases successfully using an existing extension? I want to know which one you used and how smooth the setup was.
Also, slightly off-topic but while I was browsing for extensions, I was also preparing for a tech interview and got sidetracked by some python interview questions.
I have see this Exploring Android Builder: A Collection of Helpful Guides for App Creation still I want your help If anyone have any advice, sample projects or extension suggestions you can share with me
it will be helpful!
Thank you.