aojo HK is a "membership card" app for Android and iOS, developed in Xamarin.Forms (C#). While the bulk of the application is actually just a webview (developed by another colleague), I developed the main GUI (header/tab bar), and added features such as communication between the app and webview using Javascript, push notification support, as well as interfacing with a RESTful API (for example, using the API to generate a popup banner when the app first launches).

The app was designed to be updated on the fly, which is why a Webview was used, as any updates can be done on the website and will be immediately available to the end user. The API interface also follows the same logic; being able to update the popup-banner from the server, based on the current marketing campaign of the client.

I am also responsible for maintaining the Google Play and iOS App Store listings for the app.