BitBusiness is an app that allows you to keep in touch with any store or small business, and receive its offers and promotions. Check out your favourite restaurants menu, receive discounts from your professional hairdressing salon or book the VIP room of your usual nightclub in a single click.
If you dont have a code, try using "barcelona" and check out what this app looks like :D
Continued use of GPS running in the background can dramatically decrease battery life.