Bid72 logo

Logo for an app for contract bridge players to practice their bidding

In real-life bridge, players use a box of so-called 'bidding cards' to make their bid known. This is to prevent players from using inflection to tell their partner more about their hands than they are allowed. The two shapes in the logo refer to these tab-shaped cards, specifically to the 'pass' card (which is usually green) and the 7 Notrump card (the highest bid possible).