Compass is a desktop application for casting traditional wheel charts at the heart of astrological practice: Mundane, Natal, Transit, Primary Directions, Solar Arc Directions, and Secondary Progressions. Each chart opens in its own window, so you can keep several on screen and compare them side by side.
Every control sits beside the wheel rather than behind a dialog. Change the frame, the bodies, or the aspects and the chart repaints immediately, so reading a chart and refining it become the same motion.
Find your bearings with Compass. A 15-day trial license will be automatically created the first time the application is opened. That first launch needs an internet connection.
Download for Windows 11 (x64) Download for macOS (M-Series)A Mundane chart shows the sky over any place at any moment. A Natal chart draws the birth wheel from a saved record. A Transit chart combines the two, plotting transiting positions against a natal reference and matching the aspects between them, the core technique for timing and forecasting. Three more carry the birth chart forward through a life.
Step a chart forward or backward in units from seconds to years and watch aspects form and separate. Daylight-saving transitions are handled correctly at every step, so the moment you are reading is always the moment you intended.
Cast in the tropical or sidereal zodiac, from a geocentric, topocentric, or heliocentric origin, against the ecliptic or equatorial plane. Turn the wheel to Horizon or Zodiac orientation and divide it with any of twelve house systems, from Placidus and Koch to Whole Sign and Regiomontanus.
Plot bodies from the angles, planets, lunar axis, asteroids, centaurs and Uranian points, grouped for quick selection and saved as named presets. Every chart type keeps its own aspect definitions, so natal, transit, and directed work each carry their own angles, orbs, and chord colors.
Control-drag a transiting body and the whole sky moves with it, the houses and angles holding still. Bring it within 1.5° of another body or its aspect point, release, and the chart lands on that aspect's perfection.
Shift-drag and the chart holds still as the body's ghost rides the wheel. Release it on a cusp, an angle or another body and the chart jumps to that transit: counterclockwise for the next, clockwise for the previous.
Direct a promissor to a significator by the turning of the sphere: Placidian semi-arc or Regiomontanus, zodiacal or mundane, direct or converse. Shift-drag one body onto another and the arc and its date read out as you go. Click Calculate to list all hits in a moment.
Solar Arc advances every natal point by one arc; Secondary Progressions reads the ephemeris on a day-for-a-year clock. Each draws the carried sky on the natal wheel and re-dates every listed hit as you nudge the birth time—the rectification loop, on the wheel itself.
Double-click an event row in an Aquila study and the matching Mundane or Transit chart opens in Compass, its moment and frame already set. The event you found and the sky that produced it are one gesture apart. No re-entering dates, no switching context.
Double-click a record in a Cygnus ephemeris table, or any plotted point on a graphic ephemeris, and that instant opens as a chart here. The study's own location, frame, bodies, and aspects travel with it, so the wheel is cast on exactly the terms you were reading the ephemeris on. Compass starts itself if it is not already running.
Pay once and own forever. Every purchase is backed by a 15-day, no-questions-asked money-back guarantee, and you will be up and running in a matter of minutes thanks to our automated licensing system.
Cast precise natal, transit, and directional charts with Aquila and Cygnus integration.
Aquila and Compass in one bundle. Cast charts including those based on Aquila events.
Aquila, Compass, and Cygnus in one bundle. The complete toolkit at its best price.