WikiSherpa is a mash-up of Wikivoyage, Wikipedia, and OpenStreetMap, the open-source world map. Use it to search and save Wikivoyage destination guides to your phone, and plot all their sights, hotels, etc. on the map - even while offline - for free!
You can even download an entire snapshot of Wikivoyage (and its associated Wikipedia pages) to your device for offline use, and offline maps as well.
***** Absolute best travel companion!
- Nick on the Android Market
***** Excellent app ... Will be using this a lot.
- Derek on the Android Market
Perfect for our trip!!
- BeijingWithKids on Twitter
One of the best iPhone apps I used on my trip - got me out of some binds
- amyob on Twitter
***** Great App. Ditch your Lonely Planets and put your world guidebook in your pocket.
- Jamison Wiggins in the App Store
***** Outstanding ... can replace numerous other guidebook apps.
- A._B._ in the App Store
* New Wikivoyage bulk downloads available
* New icon, by popular demand
* Various bug fixes