Thanks for checking out Firebase Yair!
If you scroll further down, we have an elaborate sample app called
FriendlyPix that is available for iOS, Web and Android too. This app is quite involved, so I highly recommend starting with the quickstart and by reading out documentation.
Both these apps share the same database across all platforms.
The database works very similar across all platforms, so once you've gotten to grips with it on one platform, you can typically move much faster on the next platform.
puf