OneDiary

Listen to Your Inner World

A cross-platform multimedia diary app that accompanies you for a lifetime

✍️ Write Naturally · Simple and Effortless

Start instantly, multiple writing modes, multimedia journaling, smart memory capture, designed for real life

Start instantly
No registration required. Works offline. Local-first storage with automatic saving — your thoughts are never lost.
Multiple writing modes
Standard editor, Daily entry mode, Rich text, and Markdown — choose what fits your style.
True multimedia journaling
Add text (Rich Text / Markdown), photos, videos, audio, documents, and links between entries. Voice-to-text, mixed layouts, and grid photo display make your memories more vivid.
Smart memory capture
Automatically records time, location, and weather. When inserting photos, the app can read the original capture time and location and, with your confirmation, update the entry to reflect the real moment it happened. AI chat content can be saved directly as a diary entry.
Designed for real life
Chat-style journaling with automatic daily grouping. Quick entry from home screen shortcuts. Backdate entries to fill in missed days.

Privacy first, personalization, smart organization, data ownership & portability

Privacy first
Passcode & biometric lock. Offline backup and encrypted data transfer.
Personalization
42 theme colors + dark mode. Custom fonts. Templates and customizable tags (with auto-tagging support).
Smart organization
Filter by photos, videos, audio, tags, or notebooks. Powerful search by keywords, date range (calendar view), or map. Statistics including streaks, heatmaps, media counts, and storage usage. Pin important entries for quick access.
Data Ownership & Portability
Sync with major cloud services (Google Drive, WebDAV, OneDrive, Dropbox, etc.). Import from Day One with ease. Batch export to PDF or Markdown for long-term archiving or printing. Your data belongs to you — not to a platform.

Time Travel Retrospect, creative output and sharing

Time Travel Retrospect
On This Day memories, map footprints to visualize your life journey. Timeline and calendar views to freely filter any time period. Favorites and comments to help you reflect on your growth.
Creative output
Export long images, PDF, or Markdown. Face-to-face diary exchange with friends and family.

Smart assistant that adds depth to your journal

AI summaries, translation, and insights
AI helps summarize your entries, translate across languages, and provide thoughtful reflections and suggestions.
AI-generated illustrations
Add visual flair to your entries — AI creates illustrations based on your diary content, making memories more vivid.
Scan handwritten journals
AI recognizes handwritten paper diaries and imports them digitally with one tap — precious memories are never lost.

Available on iPhone, Android, Mac, and Windows. Or search [OneDiary] on Appstore to download.