Most GPS camera apps hide location in EXIF metadata — invisible to whoever gets the photo, and stripped by WhatsApp, email and upload forms. GeoProof draws coordinates, address, time, accuracy, heading and altitude into the image itself, so it survives sharing. For contractors, inspectors, surveyors and adjusters. Works with no signal. Exports a day of photos as one client-ready PDF with signatures. Nothing uploads. No account, no cloud, no server. One-time unlock, no subscription, no ads.