Tree Notes

Tree Notes is a privacy-friendly, offline note app that lets you organize ideas as a tree.
Features:
• Unlimited parent/child notes (outline)
• Clean tree view with indent, colored levels, branch lines, and icons/emoji
• Create, edit, delete; move a note to another branch
• Collapse/expand branches
• Pin important notes to the top
• Tags/categories for quick grouping
• Due date to keep track of deadlines
• Attach images and files; image preview, open/share attachments
• Detail screen shows content, children, and attachments
• Light/Dark/System themes
• Multi-language (EN, ZH, FR, ID, JA, KO, RU, ES, TH, VI)
• Fully offline; data stored locally (SQLite)
• Optional PIN lock for extra privacy
No account required. Fast and simple.