How many people are in space right now?
'How many people are in space right now?' is an iOS and Android app, built with Flutter. In collaboration with berger-apps.de, this app has similar functionality to Space Viewer. Additionally, the app's main screen shows the number of people, that are in space right now.
Flutter is a framework to build cross platform native apps in the Dart programming language. It has similar goals as React Native (fully native applications, not based on web views). I have documened my experience and made a comparisonhere.