Privacy Policy

There is no sign-in, no account, no profile, no nickname and no device identifier read. Structviz has no representation of a person anywhere in its code — only of a phone that has run some operations. Nothing you do can be attributed to you, because there is no you in the model.

The manifest declares no INTERNET permission. Android refuses network access to an application that never requested it, so this is enforced below us rather than promised by us. Aeroplane mode changes nothing about how the app behaves, which is the fastest way to verify the claim without trusting it.

Not one is declared — the whole set of Android capabilities an app can reach for goes unrequested, from the sensors down to shared files. Settings → Apps → Structviz → Permissions returns an empty list, which is unusual enough to be worth looking at. Anything calling itself Structviz that asks you to grant something is not our build.

After an operation runs, the app increments a counter and updates your streak, then writes both into the sandbox Android assigns it. That sandbox is unreadable to everything else installed on the phone, and it is the only place the numbers exist: we run no backup service, so there is no duplicate of them under our control.

Android Settings → Apps → Structviz → Storage → Clear data, or uninstall the app. Either returns the state below to empty. There is no second erasure to request from us afterwards, and equally no restore we could offer if you change your mind.

Ask us what we hold about you, formally or informally, and the search terminates immediately with nothing found. That is a consequence of the first two operations rather than a policy decision we could quietly revise — there is no store to search in the first place.