Create tamper-evident, timestamped records of important events. Capture photos or videos with notes, and the app seals them with a cryptographic hash, making alterations virtually impossible. Generate verifiable PDF reports and share them securely.
1.3.4
April 3, 2026
Bug Fixes & Improvements - Fixed a bug where deleting all proofs and reopening the app would restore them unexpectedly - Your name and email in Backup & Restore now persist after reinstalling or updating the app - Added a Cancel option when deleting a proof, so accidental taps are easier to dismiss - Backup files are now clearly labeled "backup" and exported proof files are labeled "export" with the date Privacy – Updated privacy and data retention policy (for acknowledgments) - Your device's push token is now removed from our server as soon as your acknowledgement notification is delivered - Acknowledged records are automatically deleted from our server after 2 years
More$2.99
Proof Plus
Up to 50 proofs, PDF export, and iCloud backup
Proof creates tamper-evident, timestamped records of events. It uses cryptographic hashing to ensure the integrity of photos, videos, and notes, making them virtually impossible to alter after sealing.
Each record is sealed with a SHA-256 cryptographic hash derived from the content, timestamp, GPS location, and notes. Any alteration to the data will result in a mismatch of the hash, indicating tampering.
Yes, you can share your records via AirDrop, text, or email. The app also allows you to request acknowledgment from recipients via a secure link, notifying you upon their confirmation.
No, your data stays on your device. Proof does not require an account, cloud sync, or tracking. All information remains local unless you explicitly choose to share it.
Proof can generate a professional PDF export that includes your photos, full metadata, GPS location, the cryptographic hash, and a QR code for easy verification.
Proof is designed to create credible, shareable records with verifiable timestamps, which can be useful for documenting incidents, agreements, or conditions for potential legal use.
The latest version, 1.3.4, was released on April 3, 2026, indicating recent development activity. Updates typically aim to improve features and reliability.
Proof is available for iPhone and iPad devices, making it accessible to a wide range of Apple users.