First of all, clone the project source code from GitHub. You will want to follow along with the code throughout this lesson.
The app itself is designed to showcase a variety of features that tie together Ionic and Firebase. We are primarily targeting native iOS and Android platforms, but most features work as PWAs also.
Get the Beta Release on Google Play.
Get the Progressive Web App
Building a native mobile app is not easy and you will definitely run into hard-to-debug issues. One feature might work on Android, but crash on iOS, and vice-versa. Fortunately for you, I have hit many of these issues myself and can hopefully guide you in the right direction. Join the Angular Firebase Developers Slack Team and send me a direct message or post it in the #ionic3 or #general channel. I check into Slack seven days per week.