A fair card draw on a phone

A fair draw does not show the same card twice. CardFlipper takes the flipped card out of the shoe. It stays out until you reset.

The shoe is shuffled with Fisher–Yates. When the phone can provide it, the shuffle uses the device’s cryptographic random source. Shuffle mixes the cards still in the shoe. It does not put a drawn card back. Reset builds a new shoe, and the drawn cards return.

One deck is fifty-two cards. You can combine up to four decks into one shoe, and add the jokers when the game wants them. The cards you have already turned stay in a history you can open.

The public store pages are not open yet. CardFlipper is the name on Google Play and the App Store.