iTravel is a mash-up of Wikivoyage, the Wikipedia of travel guides, and OpenStreetMap, the open-source world map. Use it to search and save Wikivoyage destination guides to your phone, download a map, and plot the guide's sights, hotels, etc. on the map - even while offline.

This paid version allows you to download an entire snapshot of Wikitravel to your device for offline use, and to download more offline maps than the free version; and it will always remain free of display ads.