The Stack Above Controller app (app/stack-above-c) is the phone companion for the Stack Above display. Each player joins from the QR code, keeps a private hand, and sends legal reset-loop moves back to the main screen.


Scan the QR code on the Stack Above display and join with your name. When at least two players are present, any phone can start. On your turn, tap a highlighted card or use the available draw controls. Use Sit Out to leave the current round. Follow the number ladder and try to empty your hand. See the display guide for full scoring rules.