Discover the cities of Basel, Bern, Lucerne and Zurich with the percentage book app! The percentage book app sends you on a journey of discovery through Basel, Bern, Lucerne and Zurich with over 230 predominantly "2 for 1 vouchers". Enjoy the culinary diversity, the vibrant nightlife and the diverse leisure activities in your cities. We are now offering three different time periods for download in the app – 12, 18 and 24 months. During the period you have chosen, you can easily redeem more tha