Updated
NaviPen privacy
NaviPen has no server of its own. Notes On This Device stay on this device.
Notes in an account go only to the server you added it with. NaviPen sends nothing else: no analytics, no tracking, no crash reports of its own.
Link previews
A web address alone on a line shows a preview. NaviPen opens that page once, without cookies, to read its title, description and picture, and keeps them on this device. Turn off Show Link Previews in Settings and no page is opened.
Passwords
Passwords and access tokens are kept in the Keychain on this device.
Purchases
The free trial and the unlock go through Apple. NaviPen gets no payment details.
What is collected
Nothing. The app's privacy manifest declares no tracking and no collected data.
Questions
Write to support@navitech.dev.