I used this application before for Hong Kong, London and Washington and was very happy but Lisbon edition is beyond poor. For Lisbon, there is hardly any content available for different city attractions - when you click on the "abstract", you realize that the abstract is all you get! Before there were links to Wikipedia pages but not even that! Definitely not worth the 5€, I should have better thrown it out of the window, at least the person who would find it would be happy.