This guide will generate the best tour by taking in consideration the place you are and the time you want to spend. It will prove to be just perfect for when you want a few hours of walking on the streets of the city to discover interesting facts. One very nice feature of this app is that you will be able to listen your own music wile using the guide. The app comes with about 200 minutes of audio so it will have to download some large files. After those files are in place, about 160M, everything will work offline, including audio guide, maps, public transport with buses, metro and tram maps, points of interest with working hours.
For more insights about this Barcelona audio guide you can watch this video presentation: