Appointedd is a multi-timezone online booking system that helps businesses sell and manage their time. Up until now we only had a simple iOS app to accompany our main web app, with limited functionality in comparison. With feedback from our users, we realised more and more businesses require access to Appointedd on the move. It became obvious we needed to expand the functionality of our mobile app, and start replicating functionality already available in the web app over to mobile. We decided we would start from scratch and take a cross-platform approach so our Android users could also benefit from the mobile app. The first question was: Which technology would we use?