Guidepal City Guides (Free)
A tablet is a very handy device on a summer holiday or business trip. It completely negates the need to carry multiple guide books along. Guidepal is one app that serves this purpose well. It has guide packages for all popular cities across the world , which however take a while to download even over Wi-Fi. Each pack has maps — with limited locations — of the cities showing select restaurants, shopping areas, museums etc.