History: Maps of the World is a free iPod & iPad app for Social Studies, History, and Geography teachers, compiling maps from different eras throughout history. Viewers can explore maps by theme, historical events, and geography.
The digitized maps are easy to navigate using touch gestures, and can be zoomed in to show fine detail. While the app is a large download, the maps are available for offline viewing.
For: Teachers, Upper Primary and Secondary Students
Cost: Free (Download Link)
Requires WiFi?: No