- iOS (iPhone/iPad)
- Android; if you can't download the app from the Android market, you can get it directly from http://duckduckgo.com/android/latest.apk
There are also browser apps that use DuckDuckGo:
- Inception (iOS - DDG is default)
- Cyberspace (iOS - DDG is default)
- iCab Mobile (iOS - DDG in default list)
- Ghostery (iOS - DDG is default)
- openWeb (iOS - DDG is default)