KeePassDX

KeePassDX is a free, open-source password manager for Android built around the KeePass file format. All of your logins, notes and secrets live in a single encrypted database file (.kdbx) that you control, so you can keep it on the phone, sync it with your own cloud folder, or open the same file in KeePass-compatible apps on a computer.

The app unlocks with a master password, a key file, or biometrics, and it can fill usernames and passwords into other apps and browsers through Android's autofill service. It also generates strong passwords, stores one-time 2FA codes, keeps attachments and custom fields, and includes a history of every entry so older values are never lost.

This listing is the "libre" edition developed by Kunzisoft under the GPL-3.0 licence: no ads, no tracking and no paid features. The download link points to the official APK on the project's GitHub releases page.