KeePassDX

KeePassDX is a free, open-source password manager for Android devices that provides secure storage and management of passwords, credentials, and sensitive information using the KeePass database format (KDB/KDBX versions 1-4). Developed by Kunzisoft and written in Kotlin, KeePassDX is the most popular native Android client for KeePass databases with over 5,000 stars as of 2026. The app does not require any internet permission, ensuring complete offline operation and zero data collection. Key features include: AES-256, ChaCha20, and Twofish encryption for database security, Argon2 (Argon2d and Argon2id) key derivation function support with configurable memory cost, iterations, and parallelism, biometric authentication (fingerprint and face unlock) with device credential fallback, KeePassXC-compatible Auto-Type and keyboard autofill (KeePassDX Keyboard) for filling credentials into other apps without clipboard exposure, Magiclkeyboard integration for a system-wide custom keyboard with credential auto-fill, database merging and synchronization (supporting cloud storage via Nextcloud, Google Drive, Dropbox, WebDAV, SMB, FTP, and SFTP), password generator with customizable character sets and length, TOTP (Time-based One-Time Password) generation for two-factor authentication codes, database templates for organizing entries (credit cards, bank accounts, wireless networks, secure notes), custom icons and attachments, multiple database tabs, auto-lock with configurable timeout, emergency database access via key file and password combination, search with advanced filtering, database statistics (entropy analysis, password strength indicator), and complete Material Design 3 UI with dynamic color theming, biometric unlock, and dark/light mode. Licensed under GPL-3.0.