All of this calculation happens on your device, and is not handed over to us. Additionally, our privacy policy is to not store or collect any personal information at all: https://duckduckgo.com/privacy
Our privacy policy is extremely strict, and is the basis for our company. If we are to be found violating it at all, we would be ruined, and would probably be criminally liable.
In addition, a lot of what we do, including this new app and extension is open source so the code can be examined.
