Astrology you can check.

The Honesty Rule

We have one rule that outranks every other design decision: never show a number we can't stand behind.

If a value is measured from a live instrument, we say so and name the instrument. If it's computed from an astronomical model, we say that instead. And if a feed we'd like to show is unreachable, we tell you it's unavailable — we do not invent a plausible-looking figure to fill the gap.

A blank that's honest is worth more than a number that's wrong.

Measured vs Computed

Everything on AstroPrecise falls into one of two clearly-marked buckets.

Measured means a real, current instrument reading, pulled live and stamped with its source — the day's solar-wind speed, the geomagnetic Kp index, X-ray flare class, the F10.7 solar flux. These come straight from NOAA's Space Weather Prediction Center and the DSCOVR and GOES spacecraft. When you see "measured," a satellite saw it.

Computed means we calculated it ourselves from a published astronomical model — planetary and lunar positions, your ascendant, the Moon's phase, transit geometry. These aren't guesses or live readings; they're the output of real orbital mathematics, run in your browser at the moment you ask.

That last row is the rule in miniature.

Real Ephemeris Accuracy

The planetary engine is a real implementation of VSOP87 for the planets and ELP2000 for the Moon — the analytical theories that underpin modern almanacs — following Meeus' Astronomical Algorithms. Positions are computed to roughly an arcminute across the supported era (1800–2200 CE), not rounded sun-sign approximations. Your ascendant is derived from true local sidereal time at your exact birthplace and minute, not a lookup table.

We publish the validation separately, so you can see exactly how the numbers hold up.

Privacy by Architecture

Your birth data is the most personal thing you'll type into an astrology site — the date, time, and place of your first breath. On AstroPrecise it never leaves your device.

This isn't a promise in a policy document; it's how the site is built. The entire chart calculation runs in your browser. There is no account, no login, no analytics, and no server of ours that ever sees your birth moment. The only outbound requests the site makes are public space-weather feeds and — if you search for a birthplace — the place name you typed, sent to a geocoder. Your birth time and the chart we draw from it stay with you.

Determinism

The same birth details will always produce the same chart and the same reading — today, next year, on any device. Our interpretations are seeded deterministically, not pulled from a model that says something different every time you ask.

This matters more than it sounds. It means your reading is a property of the sky and your moment in it, not an accident of when you clicked. You can return to it, share it, and find it unchanged.

The Fabrication Problem

A word on why we built it this way. General-purpose AI tools are extraordinary at language — and notoriously unreliable at numbers they were never actually given. Ask one for "the position of Mars on your birthday" and it will often produce a confident, specific, beautifully-worded figure that is simply made up: a plausible answer pattern-matched from text, not a calculation from an orbit.

This isn't a flaw of any one product; it's what happens when fluent language stands in for real computation. We took the opposite path on purpose. AstroPrecise computes positions from astronomical models and shows you the provenance, so the poetry sits on top of arithmetic you can verify — never in place of it.

Verify It Yourself

We'd rather be checked than believed. So:

• Read the source. The whole site is static and open in your browser — open developer tools and watch the math run.
• Compare the numbers. Take any planetary position we give and check it against a reference ephemeris; they'll agree to about an arcminute across the supported era.
• Watch the network. Open the network tab and confirm what we said: public feeds and place-name lookups only. Your birth moment is never in a request.
• Test determinism. Enter the same details twice. Same chart, same words, every time.

Who Makes This

AstroPrecise is built and run by an independent astrologer-engineer — a one-person studio, UK sole trader. No team, no investors, no venture money pushing for "engagement." It exists because most astrology software hides its math and sells certainty; this one shows its working and stays honest about what's measured and what's interpreted.

Readings sold here are generated from your real chart and then personally reviewed before they're sent — a human pass, not a template with names swapped. Questions, a correction, or a chart that looks wrong? Write to jonnydavx@gmail.com — a real person reads it.