Its an ok app to see all the highlights of the city. So if its your first time in BCN, this might be handy. The recommended restaurants are far from special and i would ignore them, just use yelp or tripadvisor. Also some information is not accurate. E.g single metro ticket costs 2.00 euros and not 1.45 and trust me in july and august the temperatures easily exceeds 25C and the Raval is still no place you want to hang out late at night.
Mikeytheman!! about Guía de Barcelona - minube