Western astrology, computed
Every chart
you work with,
in one place
Folders, notes and saved transit scans for every chart in your practice — computed with the Swiss Ephemeris and timed to the exact moment rather than the nearest day.
No card required. The free plan stays free.
- 1,362
- Interpretations
- ±1″
- Positional accuracy
- 3,000 yr
- Chartable range
The natal chart
A chart you can actually read
Click any point on the wheel and it opens: position, sign, house, what it rules, every aspect it makes, and the reading — without leaving the chart or reaching for a book.
Drag to move the moment through time, zoom into a stellium, and read houses, dignities, fixed stars and Arabic Parts off crisp SVG at any size.
Transits
See what the sky is bringing
A timezone-aware timeline that solves for exact aspects instead of sampling once a day. Scan three days or three years, save the scans that matter, and keep the exact times.
The toolkit
Built like a professional tool
Drag the wheel through time
Hold and drag to move the moment forward or back and watch the planets reposition live — the Moon sweeping through a sign, the outer planets barely stirring.
Swiss Ephemeris precision
The same ephemeris professionals trust, computed in your browser — about six milliseconds for a full chart.
Interpretations built in
Readings for planets, signs, houses and aspects, a click away on the chart itself — no switching to a book mid-reading.
Fixed stars
Royal stars, bright stars and the traditional canon, with conjunctions calculated to the arcminute.
Essential dignities
Rulership, exaltation, detriment and fall marked on the chart, calculated rather than tabulated.
Today's Sky and a world map
The live sky, and every place you have charted pinned to real geography.
Your settings, per chart
Choose the points, orbs and house system for each chart rather than accepting one global default.
How it is computed
No lookup tables
Most astrology software samples planetary positions once a day and reports whatever is in orb. That is fast, and it quietly drops any aspect that forms and separates between two samples — exactly the short, sharp transits people notice.
We solve for the moment each aspect perfects, then report that time. A transit that grazes its orb for a few hours still appears, because the answer comes from an equation rather than a sampling interval.
- Ephemeris
- Swiss Ephemeris
- Positional accuracy
- ±1 arcsecond
- Date range
- 1 – 3000 AD
- Aspect timing
- Exact to the minute
- Full chart recalculation
- ~6 ms, in-browser
- House system
- Placidus
Reference
A wiki, not a horoscope feed
Every technique the app uses is documented, so you can check the reasoning rather than take a reading on faith.
Browse the wiki- Fixed stars
- Why Regulus at 0° Virgo still matters, and how conjunctions are measured to the arcminute.
- Essential dignity
- Rulership, exaltation, detriment and fall — what the classical scheme is actually claiming.
- Arabic Parts
- The Part of Fortune and its relatives, with the day and night formulae set out plainly.
- Retrograde motion
- What a station is, and why the apparent reversal is a matter of viewing angle.
Pricing
Start free, and stay free if it suits you
The free plan is a real plan, not a trial. Billing is not open yet, so everyone starts free — and upgrading later keeps everything you have made.
Free
Available nowStart charting the sky
free forever
Start free- 6 folders
- 30 events
- 90 transit scans / month
- Sun–Pluto + Lunar Nodes
- Modern era only (1900–2100)
- Community support
Basic
For the dedicated practitioner
per month · billed annually ($99.90/yr)
Email me when it opens- 60 folders
- 360 events
- 600 transit scans / month
- Lilith, Arabic Parts & Fixed Stars
- Historical charts: 1–3000 AD
- Email support
Pro
For the professional astrologer
per month · billed annually ($299.90/yr)
Email me when it opens- Unlimited folders & events
- Unlimited transit scans
- Lilith, Arabic Parts & Fixed Stars
- Historical charts: 1–3000 AD
- Priority support
Prices in USD. EUR and GBP shown at checkout.
Questions