Mar 14, 2013 - CostaCalendar SL announces CalendApp 3.0 for iOS. CalendApp is the biggest Events Search Engine on the App Store. The iPhone app will let users discover events they love, in a new and social way. Version 3.0 is free, has a number of improvements and new features, and has been painstakingly designed to facilitate even better, more personal and more relevant event discovery. Users may search for events taking place by favourite venues, interests or by events friends and family are attending.