The Ephemeris
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Learn · Six systems. One throughline.

Start here

The systems Bob reads, taught from the app's own logic — what's real math and what's a reading, always marked. Free, no account needed.

The basics

What this thing is, what's real vs. read, and why your birth time matters.

The systems

The families of astrology (and the ones that aren't astrology), and the words you'll keep seeing.

The reference

Every sign, planet, house, nakshatra, stem, branch, palace, star, type and number — what each one means. The same definitions that open inside your readings.

What you get as a member

Save a reading to your library, then reopen it or chat with Bob about it. The chart tables show the placements calculated for that reading. Export your chart as an image or your placements as a spreadsheet. Make a share card, or share a reading by link — a reading stays private until you share it, and you can switch its public link off later. Set how well you know each system, per system, so Bob pitches every tradition at your level — including “Explain like I'm five.”

How charms are used lives on the pricing page (sign in to see your account’s options), in plain numbers.

Still being written: reading types (transits, synastry, solar returns), timing in each system, and how the Convergence really works.

Ask Bob

Hello, gorgeous. What are we untangling?

Find your way around, decode a setting, or rescue that button from wherever it’s hiding. Feature help uses no chat messages.

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