Day One provides:

## Superior writing experience ##
• Clean, distraction-free interface
• Quick entry window in menu bar (Mac version)
• Multi-Markdown text formatting
• Full screen mode
• Privacy passcode lock
• Photographic entries
• Command-line interface for power users

## Context ##
Each Day One entry automatically tracks:
• Photo EXIF data
• Temperature and weather data
• Locations (GPS and Foursquare Places)
• Time and date
• Activity data - Motion and step count (iPhone 5s)

## Encouragement ##
• Customized writing reminders
• Inspirational quotes and questions (Mac version)

## Organization ##
• Search by keyword
• Create tags and #hashtags
• Star favorite entries
• Browse past entries by calendar, timeline, maps, and more

## Sync and Backup ##
• Sync entries across all your Mac devices with Dropbox or iCloud (iOS sync with purchase of iOS app)
• Backup/PDF export (with date range and tag filters) and Printing
• Automated local backups

## Sharing ##
• Tweet entries
• Check-in with Foursquare (iOS version)
• Email entries (PDF, HTML, or Plain Text)

Compatibility: OS X 10.10 or later, 64-bit processor

Home Page - http://dayoneapp.com/