Privacy Policy for survey7.com and onemilenorth.com apps (Android and iOS):

No user data is collected in any form, unless the user is explicitly sending
the data for feedback. E.g., if a user sends a feature request or error report,
that data will be collected and retained. In such circumstances, the user is
warned explicitly that their data may be retained.

The app may contain URLs to external sites, like wikipedia. These external
sites may collect data on clicks and navigation.