Moonstone — The World's First True AI Diary
Just write as always—say a few words, or jot down a few lines. AI will organize your to-dos, expenses, people, and events, turning daily moments into your personal life encyclopedia.
Core Features
What makes us special
AI Diary & Notes
Extracts tasks, expenses, people, and events directly from your entries.
Life Management
A single sentence creates a to-do or expense record.
Event Timeline
Trips, gatherings, romance—AI builds your life storylines.
Smart Search
Find memories instantly with keywords or semantic search.
Local & Secure
All data stays on your device and iCloud, never sent to third parties.
AI Intelligence
Advanced AI that understands context and learns from your writing patterns.
See Moonstone in Action
Experience the beautiful interface and powerful features of our AI diary app
Use Cases
Perfect for every lifestyle
Private Social Feed
A secret diary space, free from social pressure.
Romance Diary
Capture love stories, AI creates a Sweet Memory Book.
Tree Hole for Introverts
Write freely in a safe, judgment-free journal.
J-Person Tool
Complete to-dos, expense tracking, and schedule management while writing your diary.
Growth Journal
Travel logs, study notes, inspirations—your life encyclopedia.
Privacy Promise
Moonstone is built on one principle: your data belongs only to you.
All entries are stored locally and synced via iCloud.
Never sent to third-party servers.
Private, secure, reliable.
Your history starts today.
Join thousands of users who are already organizing their lives with Moonstone. Your personal AI diary system is just one download away.
Available on iOS and macOS • Free to download • No subscription required
