Thanks for reaching out to us about this.
That's a great idea! Bear in mind that our Community is optimised for mobile however you're right in spotting that we don't have a separate app for it.
This is an idea which has been suggested in the past several times, however it was not popular enough and so the idea is now inactive.
Having said that, feel free to go ahead and create a new one and encourage others to vote by going here.
Hope that helps! Let us know if you have any other questions.