I am iOS/Mac/Android/Rails developer.I can make both iOS/Android native application and frontend/backend web service(Ruby on Rails). I made iOS native application "SingSing". This application has ranked in App Store.This application posts user recording multitrack audio to "SingSing Community website", which I made with Rails/Heroku/REST-JSON.SingSing LITE for iOS:https://itunes.apple.com/app/singsing-lite/id578476891?mt=8SingSing Community website for Rails:http://singsing.biz/projects/110Careers by stackoverflow: http://careers.stackoverflow.com/dadachi http://careers.stackoverflow.com/dadachi