Hello, please check here our portfolio http://meliorgames.com. Feel free to ask promo code or download lite versions of any our games on the AppStore and some on the Android market too. Our company provideK full cycle of app and game development services for iOS/Android, and cross-platform development on Unity3D and we would be glad to discuss the details of your drawing app and possibly cooperate on it. In our portfolio there are our own games presented where everything (graphics/programming) is our own idea and implementation, however the major part of our work is outsourced projects (other apps and games). If you are interested in cooperation, please contact us we will discuss the details. We will be waiting for your reply. Thanks