Öffi vs Quad9
A side-by-side look at Öffi and Quad9. For an in-depth review of either product, follow the links below.
Öffi
Travel & Location
Öffi is a free and open-source public transport app for Android and iOS. It allows users to search for routes, see departure times, and navigate using public transportation in cities around the world.
transporttransitschedulesnavigation
Quad9
Security & Privacy
Quad9 is a free DNS resolution service that focuses on privacy and security. It blocks access to known malicious sites to protect users from threats.
dnsprivacysecurity