Are the apps and browser extensions 100% open source? I didn't notice anything in the text, but _maybe_ https://github.com/duckduckgo/duckduckgo-privacy-extensi

Are the apps and browser extensions 100% open source? I didn't notice anything in the text, but _maybe_ https://github.com/duckduckgo/duckduckgo-privacy-extension https://github.com/duckduckgo/duckduckgo-privacy-extension https://github.com/duckduckgo/Android https://github.com/duckduckgo/Android https://github.com/duckduckgo/iOS https://github.com/duckduckgo/iOS have the complete source code?