Børneloppen offers a membership program called Loppeklub, where users can earn points for every purchase made and enjoy perks as a stand lessor. Members can earn 10 points for every 100 Danish kroner spent, track their points, and redeem them for various rewards, including discounts on stand rentals and merchandise. Additionally, users can monitor their environmental impact by seeing the amount of CO2 and water saved by buying second-hand items instead of new.

The app facilitates stand management by allowing users to create price tags, upload item photos, track daily and total sales during active rental periods, and receive push notifications when items are sold. Users can also extend rental periods, request profit payouts, and opt in for news alerts from the store, such as notifications for available stand slots.