Yes, there is a Mobile App for Board Infinity’s Discussion Forum and you can easily find it on Playstore/Appstore. It’s called DiscourseHub.
Follow These 3 Simple Steps to access the discussion forum on the app -
Open the app and click on “Add your first” and type, “discuss.boardinfinity.com” and click on connect
Login to Board Infinity account and BOOM! You are good to go!