HashKeep

HashKeep is an encrypted SMS backup and archive for Android. Every text you receive is sealed on your device and—if you choose—copied to your own Google Drive. No account. No subscription. No servers. Your messages never leave your phone except to your own Drive, at your instruction. WHY HASHKEEP Most SMS backup apps store your messages as plain text in the cloud. Anyone who gets into that account can read every message you ever saved. HashKeep is built the opposite way: your archive is encrypted with AES-256, and the key is protected by your phone's hardware keystore. A backup is useless to anyone but you. WHAT IT DOES - Real-time backup — incoming messages are captured and encrypted the moment they arrive, even if you later delete them - Your own Google Drive — store encrypted .hkv backups in your own Drive; nothing is sent to us - Verify your backups — every backup carries a SHA-256 hash you can re-check anytime - Fast search — find any message across your whole archive in an instant - Restore — move to a new phone and bring your archive with you, with safe merge (no duplicates) - Export — save messages as CSV, or as an audit-grade PDF with a content hash (Pro) - You control retention — keep 30 days, or up to 5 years with Pro - App lock — optional fingerprint/PIN lock, plus an optional backup passphrase PRIVATE BY DESIGN - No servers — HashKeep has no backend; there's nothing for us to see or leak - On-device encryption — AES-256 with a hardware-backed key - No ads, no tracking of your messages - HashKeep cannot send messages — it only reads and protects them HASHKEEP PRO A single one-time purchase unlocks scheduled automatic Drive backups, audit-grade PDF export, extended retention up to five years, and the full audit log. No subscription—buy it once, keep it forever. Your messages, sealed and searchable.