Google owns everything by default but you can file a request with info about what you'd like to work on outside of work. If it's granted, you get to keep the ri

Google owns everything by default but you can file a request with info about what you'd like to work on outside of work. If it's granted, you get to keep the rights. It doesn't matter whether you're planning on making money from it or not. They're usually very reasonable about it, despite what you would expect from a company that covers so much ground.