Gocha-t is a nice mobile app source code for android and iOS dedicated to Pokemon Go players, to discuss and locate each other. Is a group chat app based on Ionic framework, AngularJS and you can easily export for iOS and Android. You should be familiar with Ionic, Angularjs, HTML and CSS, and Cordova/Phonegap. We will add a new update soon, awesome features included, Pokemon Go type maps with animations, server status, better geolocation. Stay tuned.