Aion icon

Aion

Diary as instrument.

Calendar: the full 2026 year grid, each written day a white disc, exercised days marked with a taijitu Calendar: the same year with the Chinese zodiac column revealed, the Year of the Horse lit Calendar: May pinned, showing Roman week numerals, the date-and-weekday column, and a moon-phase strip

Calendar

Map your life.

State

  • Written
  • Written & exercised
  • Unwritten
  • Reminder waiting

Marks

  • One event
  • Multiple events
  • Today
Chronicle: a diary entry whose timestamps are each drawn in the colour of their hour

Chronicle

Preserve your memories.

Patterns: two twelve-hour rosettes charting the hours you write, with a diamond hub and day-cell legend Patterns: an AM hour selected, its Breguet numeral lit and the hour’s entry count read in the hub Patterns: the places list revealed, each city with its own moon glyph

Patterns

Analyse the cadence of your existence.

Aion Moon Phases widget alongside Calendar, Battery, and World Clock widgets on the macOS desktop

Widget

Admire the moon.

Aion in the macOS Dock as a wide horizontal strip

Morphological cursor

Tilts for italics. Thickens for bold.

Integrated terminal

Commands from the page.

12:24 — this is the marble index of a mind, forever, voyaging through strange eons of thought, alone

Apple Reminders

Search by meaning.

Years of entries become a queryable manifold of embeddings, computed on your Mac.

In Aion, time has colour.

Every minute of the day has its own hue.

$29

One-time purchase. No subscription.
Available on the App Store.

Download

US dollars. The App Store sets local prices.

PlatformmacOS 26 or later
ArchitectureApple Silicon native, Intel supported
DependenciesNone
NetworkNot required
Data formatJSON, human-readable
ExportText · Markdown · PNG

Release notes via email.