how to add this small tips or message in my app, is this a Library ? or some thing please help me : I am new in android development. So I am trying to add the new thing in my app.then I am found the app on play store is look awesome I am searching how to add this  but I am not found  the answer

[enter image description here][1]


  [1]: https://i.stack.imgur.com/byOvQ.jpg