Firebase Tester app is designed to test and send push notifications to different devices using different platforms: - Firebase v1 and Huawei Push are currently supported; - our application allows you to easily exchange tokens between different devices using camera and QR code; - our application clearly displays what was sent to server, what response was received from server, and what set of parameters was received by your device; - our application also has a history of sending and receiving push notifications so that none of the above information is lost; - our application also contains many ready-made examples of push notifications for Android and for iOS. It will not be difficult for you to find the desired type of notification in our application and implement sending push notifications in your application, using a ready-made example.