Check if app installed and if not, link to it in store

I've created an OutSystems web app that works fine if the user is running it from a PC.  However, if the user is running it from their mobile device browser, it needs an additional app to be already installed on the mobile device (Jitsi Meet), in order to work.

How can I, from the web app,
a) determine if the user is running on a mobile device?
b) determine if Jitsi Meet is already installed on their mobile device?
c) if it isn't already installed, link to that specific app on the Android or iOS store so they can install it?

I'm not very technical, so please provide simple, detailed instructions.  Thanks!

  -- Joel

Hi Joel,

"a) determine if the user is running on a mobile device?"

On service studio there are actions that you can use for know what kind of device is runing:


Regards.

Thank you for the prompt reply, Agno!  

That answers the first question.  Any ideas about the other two questions?

  -- Joel