Bike Coin is the official currency, used in the cycling world of Activy. The only way to collect them is through gathering kilometres and points in the Activy app.
For every kilometre, on a ride longer than 1,5km, you can gain points. Depending on the competition, you will receive a different number of points for each kilometre, streak, a regular bonus or work commute bonus (more about the rules of point scoring - https://help.activy.pl/pl/support/solutions/articles/42000058577-podstawowe-zasady-punktowania ). Every gained point is converted into BikeCoins, 1 to 1.
However, if you decide to buy a gadget in the shop or desire a discount, you will pay with an adequate amount of BikeCoins. After making the purchase, the state of your virtual account will drop, but the points gained will not, neither will your statistics. The purchase only affects the BikeCoin account.