The first letter, which is 'b', is tweaked to show arrows. The arrow forming the curve of the b was seen to come back to its initial point, which shows the idea of 'reminiscing' or 'getting back'. Another arrow can also be seen at the top of the letter. Both arrows meet at a point, which shows that they crossed path. This signify the aim of the app to reconnect people who have already met before.
The letter 'b' can also be used as the app's icon.