{"package_name":"dk.bjoerckbraun.deltasync","name":"DeltaSync","summary":"Encrypted KeePass sync — requires your own self-hosted server.","category":"Cloud Storage & File Sync","icon_url":null,"latest_version_code":7,"latest_version_name":"0.4.2","apk_url":"/api/apk/dk.bjoerckbraun.deltasync","apk_size":24579825,"apk_sha256":"bfeef009dd53690206f5738641aba541f7d140f97491d5d1b8b045e76d5368c3","source_kind":"fdroid-repo","repo_slug":"fdroid-main","last_updated":1789354847,"release_timestamp":1789210732,"description":"⚠ REQUIRES YOUR OWN SERVER. DeltaSync does nothing on its own. You must first\ninstall and run the self-hosted DeltaSync server (PHP + PostgreSQL), or have\naccess to someone else's, and enrol this device against it. There is no public\nor default server — without one, this app has nothing to sync and cannot even\nbe set up. If you just want a standalone KeePass app, this is not it: use\nKeePass2Android or KeePassDX instead.\n\nDeltaSync keeps a KeePass (.kdbx) database synchronised across your devices\nthrough a server that only ever sees encrypted blobs. Your master password\nnever leaves the device, and the server cannot read entry titles, usernames,\npasswords, notes or attachments — even if it is compromised.\n\nHow it differs from other KeePass sync solutions:\n\n• Entry-level deltas: only changed entries cross the wire, not the whole\n  .kdbx file. Fewer bytes uploaded, fewer wholesale conflicts.\n\n• Real end-to-end encryption: per-entry XChaCha20-Poly1305 with a key\n  derived from your master password via Argon2id and HKDF-SHA256. The\n  server stores opaque ciphertext.\n\n• Concurrent edits merge: two devices editing different entries (or even\n  different fields of the same entry) merge cleanly. Field-level\n  last-writer-wins on conflicts.\n\n• Multi-user sharing without key escrow: NaCl sealed-box wraps the\n  database master key to each recipient's device public key. The server\n  sees who has access, not what they can decrypt.\n\n• Open source from end to end: the AGPL-3.0 server (PHP/PostgreSQL),\n  GPL-3.0 desktop client (Go), and this GPL-3.0 Android client are all\n  published. You can self-host the server, or use someone else's.\n\nThis app pairs with KeePass2Android or KeePassDX as your editor — DeltaSync\nitself is a background sync service and does not display your passwords.\nYou point it at a .kdbx file on the device, supply the master password\nonce, and it keeps the file in sync with the server through WorkManager.\n\nProject: https://gitlab.com/Star95/keepass-deltasync\nWebsi","categories":["Cloud Storage & File Sync","Password & 2FA","Security"]}