PrivacyNotes keeps notes, tasks, a calendar, files, passwords, contacts, bookmarks and a journal in one app, unlocked by a 12-word recovery phrase instead of an email and password. A BIP-39 phrase generated on your device derives every key through HKDF-SHA256, and your content is encrypted on your device with XChaCha20-Poly1305, so the synced copy on servers in Zurich, Switzerland, is ciphertext.
The journal doubles as a health tracker: mood, sleep and medication, plus heart rate, steps, caffeine, pain or a tracker of your own, each a tap a day. The medication tracker puts every dose on a schedule with a phone reminder, logs it as taken, skipped or missed, and follows refills and adherence against your mood. Patterns ranks each tracker by its effect on your mood in plain words, Explore checks one against the same day or the next, and a printable doctor report or an AI-ready prompt is computed on your device.
The calendar repeats events with up to five alerts, turns one typed line into an event with quick add, and imports Google Calendar and .ics files. The vault holds passwords, cards and SSH keys, the address book imports and exports vCard files, and ‘Share & Burn After Reading’ notes cover one-off secrets. A local Markdown mode edits a folder of files on your own disk without syncing it. The client is open source, with signed apps for macOS, Windows, Linux, Android, iOS and the web.