Time Out is a popular city guide magazine. There are a number of Time Out app for cities such as London, Paris, Berlin and New York. Some of Time Out apps have always been free such as Time Out New York. A number of Time Out city guide for example Time Out London is US$4.99 normal price. Time Out is now offering those city guide apps for free till May 2.
Time Out apps are published by different publishers depending on the city. The best way to get a list of all Time Out apps is to do a search under iTunes or App Store for “Time Out”.