Features
UnderKey keeps your most sensitive documents encrypted on your phone, never in the cloud. Every feature is designed around one principle: if we can't see it, nobody else can either.
Offline AES-256 Encryption
Your documents are encrypted on your phone with AES-256-GCM. No servers, no cloud, no backdoors.
Learn more →Document Scanner
Built-in scanner with automatic edge detection frames documents perfectly every time.
Learn more →On-Device OCR & Expiry Detection
Google ML Kit text recognition suggests expiry dates automatically from your scans, all on-device.
Learn more →Decoy Vaults
Each unlock pattern opens a different vault. Draw a second pattern for a harmless decoy.
Learn more →Expiry Reminders
Local reminders before passports, IDs and insurance expire. No cloud, no servers.
Learn more →Seed Phrase Storage
Store crypto recovery phrases offline, away from cloud backups and your photo roll.
Learn more →