Looking up an address never saves it. Your address goes only to the federal geocoder, and there is no account to attach it to. If you save one, it stays on this device until you forget it or delete the app, and only you have it. The app also keeps, on this device only, your subscription status, a copy of the public officeholder lists and of the public congressional record, for each saved address a note of who held each seat when you last looked it up (subscribers), and when it last asked for a rating, so it asks rarely. Contact support opens your own mail app; nothing is sent unless you send it. If you subscribe on the web, the license key you paste is checked with Gumroad, which sold it; nothing else goes with it.