Company Wander van der Kolk created these great apps:
Feudfraud - Wordfeud Helper & Word Finder, WWF Tool: Helper & Finder for Words With Friends, KidsKompas Parijs - Reisgids, Kids Compass Paris - Travel Guide, KidsKompas Londen - Reisgids, TopTravelMaps - Amsterdam 2013 - Offline Maps & Guide, Kids Compass London - Travel Guide, KidsKompas Barcelona - Reisgids, Kids Compass Amsterdam - Travel Guide, Kids Compass New York City (NYC) - Travel Guide, and others..