How to setup and send mobile push notifications for iOS (APNS) and Android (GCM/FCM) with React Native and PubNub.
How to build a mobile Android chat app with Cordova/PhoneGap and AngularJS, then turn it cross-platform for mobile and web devices.
How to build a simple Android chat application with Kotlin, for real-time, bidirectional messaging.
How to build an Android dating app with Java, allowing users to swipe left or right on users, collected based on geolocation proximity.
How to build your own IoT UV index monitor, complete with mobile push notifications for Android and iOS using Arduino, PubNub, and Firebase Cloud Messaging.