Really? It looks like everyone just opens the app, one person hosts, and everyone scans their phone. Done. Works over wifi. No "searching" for the hosted server.
20 seconds vs. 30 minutes to drive to the store and back.
20 seconds vs. 30 minutes to drive to the store and back.
This feels like a "neat, but why" project. Odds are the app is going to be difficult to use compared to a real deck.