Do I need to download the app to play?
No. The caller and the card both work in the browser on a phone or a computer. The app adds other modes, but bingo does not depend on it.How many people can play?
There is no limit. Each player opens their own card on their phone, and anyone who prefers paper can print one beforehand. You only need one caller per game.Are the cards saved?
No. Each card is generated on the spot and lives only in that tab. Reloading the page gives you a new card, so generate yours only when the game is about to start.Can the caller also play?
It is not recommended. The caller sees the full history of drawn numbers, which the other players do not. Better to run one round and play the next.How do I check a bingo is valid?
Stop the draw when someone calls it and compare the marked numbers with the history on the caller screen. If a number was not drawn, resume from where you stopped, without removing the numbers already announced.