ProofSpot: GPS Camera & Proof

A timestamp printed on a photo proves nothing: any photo editor can change it. ProofSpot is a GPS map camera that makes photos you can check. Every photo and video is stamped with date, time, address, coordinates and a map, then signed inside your phone, so anyone can verify that the time and place were not edited.

✅ SIGNED, VERIFIABLE GPS PHOTOS
• Stamp every photo and video with date, time, time zone, address, GPS coordinates, map, altitude, GPS accuracy, compass direction and optional weather.
• Each capture is signed with a key kept in your phone's secure hardware (Android Keystore). The QR code on the stamp carries the signed time and place.
• Anyone can scan the QR code with any phone camera to see the signed record: no app or account needed.
• Verify tab: open any ProofSpot photo, even one received by message or email. ProofSpot checks the signature and compares the picture with what was signed. An edited picture, or a stamp copied onto another photo, is detected.
• No GPS indoors? Set a manual location: it is clearly marked as manual on the stamp and inside the proof.

📍 SAME SPOT: BEFORE / AFTER THAT LINE UP
• Save any photo as a spot. ProofSpot guides you back with distance and direction.
• The first photo appears as a ghost over the camera, with compass, tilt and level guides that turn green when you match the original. It can even take the photo for you when aligned.
• Compare with a slider and share both signed photos side by side. Perfect for construction progress, repairs, crops, erosion or a rental's condition at move-in and move-out.

📄 FIELD VISITS AND SIGNED PDF REPORTS
• Start a visit: every photo you take is added to it.
• Get a PDF report with a map of numbered points, every photo with its GPS data, and an appendix of proof codes and SHA-256 fingerprints so the recipient can check each file.
• Export to CSV (spreadsheets) and KML (Google Earth, GIS).

🗺️ GPS STAMP YOUR WAY
• Three stamp templates: Classic, Minimal and Field report. Dark, light or survey green style, size and position.
• Map type: normal, satellite, hybrid or muted.
• Coordinates in decimal or degrees-minutes-seconds, Plus Code, date formats, 12/24 h, metric or imperial units.
• Notes and hashtags on the stamp, your logo with Pro.

📷 A REAL CAMERA
• Photo and video with live GPS stamp, flash and torch, tap to focus, pinch zoom, 1× 2× 5×, grid, 4:3 / 16:9 / 1:1, self-timer, white balance, front camera mirroring.
• Take the photo with the volume buttons.
• The stamp you see on the camera is exactly what is saved.

👷 MADE FOR FIELD WORK
Construction site and progress photos, inspections, insurance claims and damage reports, real estate and rental inventories, deliveries and proof of service, surveys, agriculture, security patrols, field sales and audits.

🔒 PRIVATE BY DESIGN
• Your photos, places, reports and signing key stay on your phone. No account, no sign-up, no cloud.
• Weather is optional and only sends a position rounded to about 1 km.

⭐ FREE, WITH A PRO PASS
Every capture feature, signing and verification are free, with ads. Watch one short video to unlock ProofSpot Pro for 24 hours: signed proof videos, full PDF reports with your logo, unlimited same-spot tracking, your logo on stamps, CSV and KML export, and no ads.

📖 HOW IT WORKS
1. Open ProofSpot and allow camera and location.
2. Take a photo: it is stamped, signed and saved with its proof code.
3. Share it. Anyone can scan the QR code, or check the photo in ProofSpot → Verify.

Weather data: MET Norway (CC BY 4.0). Maps: © OpenStreetMap contributors, imagery © Esri.

Recent changes:
First release of ProofSpot: GPS camera with signed QR proof, Same Spot before/after photos and signed PDF field reports.