See what was active the day it happened. Tag events on the timeline and build your own searchable research database. Customize which timing techniques appear below events for faster research.
Meet A research instrument.
Astrology software built to grow with your practice. Take your projects with you anywhere and carry your entire research database in your pocket.
Study one moment through multiple lenses.
Hellenistic to modern, on the desktop, in the browser and on your phone.
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Mac, Windows and Linux
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iPhone and Android
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Any browser
- 3views of the
same moment - 227lots, from 15
source texts - 23house
systems - 10zodiacs, tropical
and sidereal - 629fixed stars,
with parans - 26,042minor
planets
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Your research travels with you.
Access your favorite techniques on the go, so you can keep reading wherever you are.
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Use graph mode to visualize planetary transits.
Customize your own presets to instantly switch between forecasts.
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Check the dashboard for a quick digest.
Pin your favorite charts to the dashboard to always know what's going on.
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See the nativity through the sky itself.
Observe the planets and fixed stars live from wherever you are.
Every technique, in one place.
Create workspace presets to quickly switch between methods of interpretation.
- Hellenistic
- Annual and monthly profections, zodiacal releasing, decennials, circumambulation through the bounds, primary directions, and the planetary hours.
- Medieval
- Firdaria, major and sub periods, sect aware, and lots drawn from a range of sources.
- Renaissance
- Temperament after Lilly, the void-of-course Moon, and direct and converse primary directions available in Naibod, Cardan, Placidus, and Regiomontanus.
- Modern
- Secondary, tertiary and minor progressions, and solar arc directions.
From across traditions
Study historical events on the timeline.
Record events manually or import them from the web, and analyze them against several techniques at once.
Click any point on the chart to record a note. Notes arrive with customizable tags so they’re always sortable and easy to find.
Group notes and events into research projects. A project pulls together recorded notes and events from across your database so you can form your own theories.
Import data directly from the web.
Look up public figures and bring their birth data, image and life events into your database.
Type a name and the form fills itself. Set the birth time yourself and file every chart with its Rodden rating.
Import a public figure’s whole life in one search. Marriages, offices, awards and works arrive dated. Tick the ones you want on the timeline.
Wikipedia biographies come in automatically. The About tab loads summaries for well-known people.
A closer look.
Chart6
Chart rings. Proportional houses and zodiac, and twelve ring options: constellations, nakshatras, lunar mansions, decans, bounds, ninth and twelfth parts, fixed stars, minor planets, lots, midpoints and apsides.
Bi, tri and quad wheels. A second, third and fourth chart on the same wheel, each with its own ring of points and its own readout. Transits, the secondary progressed and the lunar return over Ali’s nativity here.
Two zodiacs at once. Read one chart in two zodiacs at the same time. The second sits as a band of its own under the first, so a degree can be read in both without recasting anything. Ali’s nativity is shown here with the two frames about 23 degrees apart.
Four wheels at once. Up to four wheels on the stage together, each its own chart and its own rings. Ali’s nativity under transits is shown here, beside his secondary progressed and the lunar and solar returns for 1971.
Fixed stars. Contacts and parans against a canon of 629 stars, on their own ring or in the planet band.
Transits to the chart. Choose a transiting planet and its aspects to natal planets are highlighted so you can study specific configurations without distractions.
In the planet band On their own ring
Timing4
Election window. Add the election conditions you need to find auspicious windows inside the timeframes you choose. Save recipes to return to them.
Life timeline. Study life events on the timeline across an array of fully customizable timing techniques.
Notes and events. Write notes on a placement in the wheel, or track events on the timeline. Every note and event carries tags, so similar examples can be grouped into research projects later.
Planetary Hours. Scrub time using the Planetary Hours widget so you can see exactly how the angles move within a particular hour lord’s timeframe.
Graph2
Transit curves. Every contact plotted over time, with its exact perfections marked on the curve. Choose which bodies and aspects are drawn, and save any setup as a preset to switch between forecasts.
Secondary progressions. View secondary progressions on the graph along with transits. Choose which bodies and aspects are drawn, and save any setup as a preset.
Sphere4
Sky. Explore the sky right now wherever you are observing from, or the sky a nativity was born under, with the planets, stars and constellations mapped where they actually are.
Globe. The globe draws the celestial sphere and its great circles, so you can more easily visualize coordinate systems, and how different house systems meet the horizon.
Primary Directions. The globe animates primary directions between two chart points, direct or converse, and reads parallels and contraparallels off the declination tool.
Constellation figures. 85 constellation figures painted behind their lines in the modern set, and 74 of them engraved after Hevelius.
Modern Engraving
Dashboard1
Your Orbit. Pin the charts you care about most to your orbit, and find them on the dashboard for a daily digest of their latest forecasts.
Workflow4
Workspace tabs. Each chart you work with gets its own tab, so you never lose your work and can jump between multiple research projects at the same time. Tabs sync across different views and modes, and drag into whatever order you want them in.
Ephemeris. Build a table of positions for any span and any step, for the bodies you choose, in zodiacal degrees or decimal. Take it away as a CSV.
Command palette. Search for almost anything: a note you tagged a month ago, a saved chart, a setting you are looking to tweak.
Research projects. Group notes and events together into research projects by their tags. Create multiple groups within a project and record your own theories and findings for each group. Organize and export your project as a PDF.
Skins7
Twilight. Customize skins to fit your vibe. Create your own and switch between them on every device.
Daybreak. Customize skins to fit your vibe. Create your own and switch between them on every device.
Lamplight. Customize skins to fit your vibe. Create your own and switch between them on every device.
Meadow. Customize skins to fit your vibe. Create your own and switch between them on every device.
Gilt. Customize skins to fit your vibe. Create your own and switch between them on every device.
Bubblegum. Customize skins to fit your vibe. Create your own and switch between them on every device.
Cathedral. Customize skins to fit your vibe. Create your own and switch between them on every device.
Everything in the box.
Hellenistic timing
Time-lord procedures. Profections, zodiacal releasing, decennials, firdaria, circumambulation and primary directions available however you work.
The wheel
23 house systems across tropical and sidereal zodiacs. Easily switch between rings including bounds, decans, lunar mansions, nakshatras, constellational, 9th parts and 12th parts.
Points on the chart
227 lots. 629 fixed stars. 195 asteroids and other minor planets. Star contacts read by conjunction, parallel, mundo, co-rising, or with all four working simultaneously.
Auxiliary charts
Cast from the chart in front of you. Returns, ingresses, composite charts, solar arc directions and progressions, set as a ring on the wheel or as their own wheel beside it.
Transit graph
Visualize transits as curves. Watch one build, perfect and separate, with every exact date marked, over any range you set, with hits on your lord of the year marked to stand out.
Smart collection
Create your own research projects. Organize charts by tags or topics, sort them into case studies, and build your own database of everything you have read.
Importing your charts
Whatever you built your library in. Import .SFcht files directly, or paste an .AAF, which most other programs export, so nothing you already own has to be typed in a second time.
Find anything
⌘K opens the search box. Type a chart name, a placement, dignity or aspect, or any tag you have put on a note or event, and pull every chart in your library that matches.
The workspace
Three lenses, one moment.
Chart, Graph and Sphere all read the same instant across all of your active workspace tabs.
Every technique and setting
Timing
- Profections
- Zodiacal releasing
- Firdaria
- Decennials
- Circumambulation
- Primary directions
- Secondary progressions
- Tertiary progressions
- Minor progressions
- Solar arc directions
- Planetary hours
- Transits
Charts cast from a chart
- Solar returns
- Lunar returns
- Planetary returns
- Lunar phase returns
- Ingresses
- Profected year
- Profected month
- Composite
- Davison
On the wheel
- Bounds
- Decans
- Ninth parts
- Twelfth parts
- Lunar mansions
- Nakshatras
- Constellations
- Fixed stars
- Parans
- Lots
- Midpoints
- Minor planets
Frames and measures
- 23 house systems
- Ten zodiacs
- Sidereal and tropical
- Draconic
- User-defined SVP
- Local mean time
- Heliocentric
- Topocentric
- Declinations
- Speculum columns
- Unknown birth time
Try it out for free.
Thirty-day free trial with access to everything in Arcus, synced across all of your devices.
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Monthly
$10a month
Cancel any time
- Full access to everything in Arcus
- Mac, Windows, Linux, iPhone, Android and any browser
- All updates included
- Cancel at any time and still reach and export all of your data
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Yearly
$96a year
$8 a month, billed once a year
- Full access to everything in Arcus
- Mac, Windows, Linux, iPhone, Android and any browser
- All updates included
- Cancel at any time and still reach and export all of your data
Your charts, notes and events stay in your account whether you are subscribed or not, and you can sign in and export them whenever you like.