Paperplanets computes your full natal chart using the Swiss Ephemeris — the same astronomical engine used in academic research and planetarium software. We calculate the exact position of every planet at the moment you were born, your house placements, and the angular relationships between them.

Then an AI reads it. Not from a template. From your data — walking you through what your sky actually says.

Our Python backend runs the Swiss Ephemeris (pyswisseph), computing planetary longitudes, house cusps, and aspect geometry in real time. This is the same library used by professional astrologers and astronomical researchers worldwide — sub-arcsecond accuracy over a 10,000-year span.

Transits are calculated fresh every day. Your daily reading isn't recycled content — it's today's actual sky, cross-referenced against your natal positions.

Add a friend, partner, crush, or coworker. Paperplanets runs a full synastry comparison — overlaying two natal charts and analyzing every planet-to-planet aspect between them. The result is a detailed compatibility scorecard with AI-powered interpretation.

This isn't "Scorpio and Gemini don't mix." It's your Venus conjunct their Mars, your Moon square their Saturn — the actual geometry between two specific skies.

Every reading is saved in your personal leather-bound journal. Browse your history, revisit past insights, manage friends, and track how transits play out over time.

Two tiers. Free gets you started. Premium unlocks everything.