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Everything starts from a chart: a name, a date and time, a place and a kind (natal, event or horary). Charts in the top bar is your library; New chart opens the form.

• The library has four collections: Mine, Starred, Recent and Public. Search by name, place, tag, folder, Sun sign (“Sun Sag”) or year (“1815”), and narrow by folder, type, Sun sign or tag. ⌘K finds the same from any page, along with folders and pages to go to. Recently opened charts sit as cards above the list; each row has Transits and Compare links.
• The finder (the search box in the top bar, or ⌘K) opens any of your charts by name from any page, and can start a new one.
• The dock on the left of a chart lists the chart you are on, the ones you opened recently and the ones you starred, as initials. The + tile opens the library; the chevron at the bottom shows the names; the last tile is your account.
• New chart takes the date as day, month and year, the time, and a place chosen from the list so its coordinates and time zone are filled in. The wheel on the right redraws as you type. Tick Time unknown when it is, and set a Rodden rating to record how reliable the time is.

The chart workspace

Opening a chart shows the wheel in the middle, the inspector on the right and the time bar underneath. Below tablet width the inspector moves under the wheel.

• The header names the chart and its moment. The Placidus and Tropical pills switch house system and zodiac in place; Edit opens the chart's form, and Save keeps a chart that is not yet in your library. Notes, Share and Present sit beside the Compare and Derive menus; the gear opens the chart settings.
• The wheel: click a planet or an aspect line to select it; its aspects stay lit and the rest dims. Click it again, or press Full record in the inspector, for everything about it. Esc or Clear returns to the full wheel. Scroll to zoom and drag to pan; the toggles above the wheel switch Aspect lines, Dignities and, where the chart has one, Profections; the corner button fills the screen.
• The inspector has four tabs. Overview: the Sun, Moon and Rising tiles, the at-a-glance chips, the tightest aspects and the calculation facts. Positions: every point with its sign, degree and house; click one to select it on the wheel. Aspects: the aspect list. Timing: what is coming up, the chart's date, time and place, and the horary tools on a horary chart.
• The time bar moves the chart through time: ← and → step by the unit shown (Step changes it), Play animates, the slider scrubs, Birth moment (or Event, or Question) returns to the chart's own time and Now jumps to the present. A natal chart moved this way is not saved; a transit chart is.
• Present hides the chrome for a reading over a call. The ? button in the top bar lists every keyboard shortcut.

Comparing and deriving

Both menus live in the chart header. Compare puts a second chart in the outer ring; Derive makes a new chart from this one and opens it.

• Compare › Transits now surrounds the chart with the running sky at your home place. Synastry with… opens the library to pick the second chart; the two-ring chart then shows the aspects between them, and Show as synastry turns a composite back into its pair.
• Derive › Secondary progressions and Solar arc directions move the chart forward by the symbolic day-for-a-year methods. Return finds when a planet comes back to its natal place, for any place. Relocated casts the same moment somewhere else. Composite is the midpoint chart of this chart and one you pick.
• A derived chart has its own address. Save in its inspector keeps it; saved derived charts are listed in the Timing tab of the chart they came from.

Chart pages

The tabs under a chart's name open the same chart as pages: Chart is the workspace, the rest are tables and text.

• Overview: who the chart is (trinity, sect, chart ruler, lunation), where its weight lies (elements, modalities, hemispheres, the busiest planet, stelliums), what stands out (tightest aspects, out-of-bounds and retrograde points, the final dispositor) and the declination map.
• Aspects: every aspect with its angle, arc, type and orb. On a two-ring chart, Aspects between charts is the grid of contacts between the two.
• Positions: sign, house, longitude, declination, dignity, modality, element and speed of each point, with the catalogues of planets, asteroids and fixed stars to add to your selection.
• Midpoints: the midpoint of each pair with its 90° position. Tick the ones you want and Save midpoints to keep them on your charts.
• Reading: a written reading of the chart. It describes possibilities, not events, and leaves out subjects such as health.
• Notes: your own notes on the chart, in Markdown, private or shareable. The Timeline tab reads them in the order they were written.
• Share: download a PDF or an image of the wheel, open the print view, or copy the chart's link. A chart you mark public can be opened by anyone with the link.

Sky

The Sky section has four tabs: Cycles, Events, Saved and Ephemeris.

• Cycles lays a year out as a strip: the sign ingresses of the planet you pick, New and Full Moons, eclipses and retrograde stations, cast for your home place. Coming up lists the next events; any event opens as a chart of that moment.
• Events finds when an aspect perfects, a planet changes direction, or a planet enters a sign or house within a date range. Saved keeps each search and its results, as a list or a timeline, and downloads them as a calendar or a spreadsheet.
• Ephemeris builds a table of positions for the dates, step and points you choose, downloadable as a spreadsheet.

Settings and account

• Preferences: colour theme (it applies as you pick it), how dates and times are written, your home place for transits and cycles, and the chart defaults.
• Chart settings (the gear in a chart's header) group the calculation and wheel options: zodiac and house system, house sizing and cusp lines, rings, degree ticks, crowded glyphs, aspect lines, Moon position, lots, planetary nodes and composite houses. Each change saves as you make it and applies to all your charts.
• Aspects: switch each aspect on or off and set its applying and separating orbs.
• Positions, Midpoints and Tags: the points your charts show, your saved midpoints, and the tags you file charts under.
• Account (the last tile in the dock, or your initial in the top bar): change your name and sign out. Contact the owner if you need to change your sign-in email.

How-to guides

Cast a birth chart

1. Press New chart, then enter the name, the date as day, month and year, the time and the place, choosing the place from the list.
2. If the birth time is not known, tick Time unknown; the chart is cast for noon and the reading leaves out what depends on the time.
3. Save. The chart opens in the workspace and stays in your library.

Cast a horary question

1. Press New chart, choose the Horary kind and enter the moment and place the question was asked, usually now and here.
2. Write the question as the chart's name and save.
3. In the workspace, open the inspector's Timing tab: the horary tools name the significators and the considerations before judgement.

Read the transits for a date

1. Open the chart and choose Compare › Transits now.
2. In the time bar, set Step to day, month or year and use ← →, or type the date into the time bar.
3. Click a transiting planet to see its aspects to the natal chart, or open the Aspects between charts page for the whole grid.

Export a PDF for a client

1. Open the chart's Share page.
2. Tick Use chart title to name the file after the chart, keep Symbol key on for a legend, and tick Share notes to include the notes marked shareable.
3. Press Download PDF. If the browser cannot build it, the print view opens instead: choose Save as PDF there.

Share a chart read-only

1. Edit the chart and mark it public.
2. On the Share page, copy the chart link. Anyone with it can open the chart; your notes stay private unless marked shareable.

Try a birth time

1. Open the natal chart and set Step in the time bar to minutes.
2. Step with ← → and watch the Rising sign and the house cusps in the inspector's Positions tab. Nothing is saved while you do this.
3. When a time fits, press Edit and enter it on the form.

Switch house systems

1. Click the Placidus pill in the chart header and pick another system; the wheel recasts at once.
2. To make it the default for every chart, set it in the gear's Zodiac & houses group or in Settings › Preferences.

Turn on dignities and profections

1. Above the wheel, press Dignities to draw the ring of domiciles and exaltations.
2. On a natal chart, press Profections to mark this year's profected house; the Timing tab names its lord.

Data and accuracy

• Before 1970: historical daylight-saving rules are patchy, so the form shows a notice and the header carries a Zone unverified badge when the offset could not be confirmed. The offset can be set by hand when editing the chart.
• Rodden rating: AA to X records how reliable a birth time is. It travels with the chart and shows in the header.
• Outside the ephemeris: dates the ephemeris service cannot compute open a notice instead of a chart, with a link to correct the date.
• Readings follow the sources named at the top of the Reading page and describe possibilities, never events.