The Phaidon Atlas of 21st Century Architecture and The Phaidon Atlas of Contemporary World Architecture are inspiring sourcebooks for the ages, but as with many authoritative, lushly illustrated volumes, it is impossible to fit them in one’s pocket, unless one has very special pants. Fear not, culture-conscious traveler, because Phaidon has just released The Phaidon Architecture Travel Guide App, an iPhone- or iPad-ready resource that’s yours for $3.99 from the iTunes store. With some 1,500 projects from 840 architectural practices (cherrypicked from both atlases), the app can be browsed by location, project, practice, and building type. Plus, the bookmarking options make it easy to create a “To See” list of architecture marvels around the globe. And travelers, take heart: no Wi-Fi or 3G is required to run the app.

Got an app we should know about? Drop us a line at unbeige [at] mediabistro.com