Catet: Chat Notes & Journal

Catet is a notes and daily journal app that works 100% offline: no cloud, no account, no ads. All your notes are stored safely on your own device.

What makes Catet different: your notes appear in a chat style. Each category is a “chat room,” and every note shows up as a bubble. It’s like messaging yourself, but tidy, organized, and searchable.

✉️ CHAT-STYLE NOTES

Categories as chat rooms with automatic date dividers
Pin important notes, archive old ones
Reply/thread: quote an older note to continue an idea
Multi-select to archive, delete, or move notes in bulk
Task Mode: turn any category into a checklist with a progress bar
Drag-to-reorder for categories and notes
Trash with 30-day auto-purge + Undo button

⌨️ FULL VIM EDITOR
A real Vim mode in a local notes app:

Normal, Insert, Visual, and Command modes
Core motions: h j k l w b e 0 $ gg G dd yy p x o O, and many more
Named registers and macros (q and @)
Scrollable Vim key row above the keyboard
Live markdown preview: tables, task lists, strikethrough

📔 DAILY JOURNAL

Journal templates per category with automatic prefill
Writing streaks and stats for consecutive days. Build a daily writing habit.

🔗 SYSTEM INTEGRATION

Home screen widget: your 3 latest notes always in view
Quick Settings Tile for instant note-taking from anywhere
Receive shares from other apps (browser, WhatsApp, etc.)
Note reminders that stay active after your phone restarts
Import from Google Keep (Takeout) and text/markdown files
Export per category to .md or .txt
Encrypted backup for safely moving to a new device

🎨 THEMES & PERSONALIZATION

Light, Dark, and pure-black AMOLED
Premium themes: Catppuccin Mocha, Catppuccin Latte, Gruvbox, Nord
Right-to-left (RTL) writing support per category, including Arabic and Pegon script

⭐ PREMIUM FEATURES (one-time purchase, no subscription)

AES-256 category encryption with PIN or fingerprint
Regex search + advanced filters (category groups, date ranges)
Scheduled auto-backup to a folder of your choice
Focus writing mode: IBM Plex Mono font, auto-hiding toolbar

🔒 PRIVACY AS THE FOUNDATION

No account, no login
No server connection. Your data never leaves your device.
No ads, no trackers
Lightweight code, battery-friendly

Perfect for:
✓ Journalers who want a consistent writing habit
✓ Developers and Vim users who want terminal-style typing speed
✓ Students and Islamic boarding school students (santri) taking study and lecture notes, with Arabic and Pegon support
✓ Anyone tired of notes apps full of ads and subscriptions

Download Catet now. Your notes, on your device, forever.