Koz - Private Notes

About this app

Koz is a privacy-focused notes app built around one idea. What you write belongs only to you. Koz never connects to the internet. No accounts, no servers, no analytics, no ads. Everything in your notebook stays only on your device. SECURITY • Notes are sealed with AES-256-GCM, the whole database is encrypted with SQLCipher. • The PIN that unlocks the app also derives the encryption key (Argon2id); the PIN itself is never stored anywhere. • Unlock quickly with fingerprint or Face ID. • Emergency password: entering it shows "wrong PIN" on screen, but quietly wipes the vault. Built for moments you're forced to unlock the app. NOTES • Organize freely with folders inside folders. • Attach photos, files, and voice memos, all encrypted the same way as your text. • Hide any note or folder so it disappears completely from browsing; only you can bring it back. BACKUP • Create an encrypted backup file any time, protected with its own separate password. • Backups are never uploaded anywhere; where you keep them is entirely up to you. Terms of Use (EULA): https://koznotes.app/terms Privacy Policy: https://koznotes.app/privacy

New: • Fonts: six classic typefaces and wider text size steps. Your choice carries into the PDF export. • Lock when idle: the vault closes after the idle time you pick. • Free note limit raised to 7. • Note and folder PINs pause after 5 wrong tries. • Tables: cell alignment, column width, one-step delete. • Folder icons and colours, plus an in-app camera. • The app tour now covers all of this. Fixes: undo after deleting a note, backup export, light theme system bars.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 23, 2026 · 4:17 AM Free