All Services Programming & Development Mobile development $50/hr · Starting at $1K Android (Java) or iOS(Objective-C/Swift). Can also build API for the mobile app to consume with Ruby on Rails and PostgreSQL. About $50/hr · Ongoing Download Resume Android (Java) or iOS(Objective-C/Swift). Can also build API for the mobile app to consume with Ruby on Rails and PostgreSQL. Skills & Expertise AndroidAPICiOSJavaMobileMobile DevelopmentObjective-CPostgreSQLRuby on Rails Related Work Collections Raspberry Pi proximity sensor 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts Ruby on Rails DevelopersJava DevelopersRaspberry Pi ProgrammersPostgreSQL DevelopersPython DevelopersMySQL DevelopersC ProgrammersArduino ProgrammersAPI DevelopersMobile App DevelopersObjective-C Developers