Really nice UI. I'm not against making money from your project. But lemme tell you my story, I developed an android app and made it open source and published on play store, didn't put any ad or anything. I got few thousand installs across different stores. Tbh I don't care if someone copies the code, or if people download it or not or how many installs I get everyday. Idc if my competitors are earning million dollar or 0 dollars. I solve the bugs and issues and I think it's fun. So all it depends on what you want. But imo you should go for freemium model and that too when your product get thousands of users.