Are there ready-made libraries for displaying information about the availability of an application for a site?

Question

JavaScript

For some sites, when opened from a mobile phone (for example, Vedomosti or Labyrinth.ru), a plate pops up at the top, informing about the presence of an Android or iOS application (depending on which device the site is opened from). The plate is comfortable and visual. Of course, you can write this yourself, but there are probably ready-made tools. Share, who knows?
Thank you.

Answer 1

https://habrahabr.ru/sandbox/53177/
For the "green robot" there is also a similar met-ka, I just don't remember.

Answer 2

Just put a special meta tag indicating the id of the application in the store. Google it