Hello, having grreat experience in GPS app development . We have gone through your post regarding Mobile App Development. We comprehend your requirement and we are pretty confident in this job. We have 5+ years of experience in android and iOS development. We are an expert in many technical skills which are important for app development. Android: Android studio, iOS, Java, Eclipse, XML, JSON, Firebase, XMPP Chat Framework, React Native, Ionic, Audio/Video Calling & Re-recording, SQLite, Social networking integration Payment gateways, Google Map ( Google places service, Route draw, Google API ) Third Party API integration, ML kit etc