Notes Tech

Notes Tech: 100% local Markdown note-taking, encrypted at rest. Written in Kotlin. Radical privacy • No INTERNET permission — verifiable with aapt dump permissions app.apk • No account, no telemetry, no tracker, no advertising • SQLCipher AES-256 database, key sealed by the Android Keystore • Multi-step panic mode: wipes keys, database and dictation model in seconds • Optional app lock: a PIN, plus strong biometrics if you wish Per-folder vaults • Argon2id passphrase (m=64MB, t=3) or Keystore-bound PIN (Android 9+) • AES-256-GCM per note, bound to its note (anti-swap) • PIN auto-wipe after 5 failures • Configurable auto-lock (5 min to never) On-device voice dictation • whisper.cpp built into the app; Whisper model imported manually • SHA-256 verified at import and before loading • Recordings deleted after transcription Editing • Notes open to be read (Markdown: headings, lists, links); “Edit” to write, autosave • Long press on a note: edit, move to trash with Undo, or delete permanently • A pastel colour per note in the lists (a vault note's only while its vault is open) • [[Title]] backlinks with autocomplete + "notes linking here" panel • Instant FTS5 search, configurable sort • Markdown export, one note or a ZIP (YAML frontmatter, Obsidian/Logseq compatible) Five languages • English, French, German, Italian, Spanish — chosen in Settings • Light / dark / system theme • Privacy policy and terms in the five languages Permissions • Microphone: dictation only, asked when you turn it on • Biometrics: app lock only, gives access to no data Open source Apache 2.0 Full and verifiable source code on GitHub: gitubpatrice/notes_tech For thinkers, therapists, students, researchers, writers and journalists who want to take sensitive or dense notes without them ever leaving their phone.