Hello, I won't charge you any advance payment, so be assured your work will be done to your satisfaction!! I am Iryna from not so big city of Ukraine called Rivne, I have worked as an iOS developer for a company for 4+ years and then started android As well for 2+ years, i can develop app from mid size to large scale apps and games, since i have left the company last year that i have worked for 6+ years and now starting with my own team (have worked previously some freelancing too) but now officially coming up with my own profile and with a back of a smart team (starting with 4 of us) you won't be disappointed!