Covid19 Tracker is a sample Android application focused on displaying statistics using graphs and adding a lot of tests. From a technical point of view, it has an Offline-First approach and uses the Single Source of Truth principle. Also, it has been built making use of a huge database and Flow streams with the aim of achieving the best performance.
Single Source Of Truth (SSOT) for subscription billing, aggregating transactions and partners through abstract Transaction Gateways and subscriber matching service
