RentBYK is a bike rental & sharing app. Our aim is to encourage the use of bicycles and public transport and thereby help our cities turn sustainable, congestion & pollution-free and citizens healthier. Simply download the app to locate a RentBYK Hub near you. At the hub, select your bike and press unlock against its number in the mobile app. That’s it!. You can lock RentBYK anywhere you want and unlock it again from the app. However, to end your ride, you have to return RentBYK to a hub, lock the bike and submit an “End Ride” request from the app.