An android notes app which uses Firebase to authenticate users and save their notes online and the person can access the notes from anywhere or from any other mobile phone , what he has to do is just login with the userid and password and he/she can access the notes easily
In order to run the project you have to enter your own Firebase app Json key without it. This will not work here.
In the folder app/ you have to place your json file in order to make the project work.