Firebase is a Google product.
Use the start-up package for free and only start paying once you’ve expanded beyond the free package limits. You can check out the pricing here https://firebase.google.com/pricing/
Want to simplify communicating with the cloud?
More and more mobile apps are making use of data storage in the cloud. Android provides the tools to communicate with the cloud but it takes quite a bit of coding to make it work.
OkHttp is a popular library that reduces the amount of code, making it very easy for you to make use of cloud storage for your app.
OkHttp is developed by Square and is FREE!