Ask HN: How to prove that my app does not upload personal data to servers?

[jktzes]

I am trying to build a mobile app that's gonna handle a lot of private information. I am trying to address my superior protection of user's privacy on landing page. What's the best way to prove/show it?

[dylz]

Make it not online. Make it completely usable offline without ANY form of data being sent to you or any registration.

[cocktailpeanuts]

Tell them to try using in airplane mode