Now adays availability of the data and knowing how the app is working in order to satisfy the needs of the customers says it all. Google firebase is the solution for all of our related problems regarding the application.
Either it is Sending push notifications, Crash reports you name it.
Google Firebase is know getting better day by day and is available now.
Please note that price is not fix. Price can vary according to the features you want to get included in your application.
I will integrate google firebase into your android application.