AI · SiastroGPT
More precise than horoscopes · Free · No sign-up

Couple compatibility test
more precise than zodiac signs

Forget horoscopes, destiny matrices and the Pythagorean square. AI SiastroGPT calculates neuro-compatibility from birth data based on real data — not stars, but psychology.

Horoscope, zodiac signs,
destiny matrix, numerology
based on mythology
SiastroGPT
neuro-compatibility
based on data from 2M+ profiles
6 levels of analysis
2M+ profiles in the database
0 esoterics

Enter the couple's details

Fill in both profiles — SiastroGPT calculates K instantly

Male
First partner
Please enter the birth place
Please enter the birth date
The partner must be at least 18 years old
Birth time improves accuracy by 15–20%
Female
Second partner
Please enter the birth place
Please enter the birth date
The partner must be at least 18 years old
Birth time improves accuracy by 15–20%
The couple compatibility test is completely free
Calculating compatibility across 6 levels…

Compatibility test by birth date — more precise than a horoscope

Horoscopes, zodiac signs, destiny matrices, numerology, the Pythagorean square — these are all attempts to predict compatibility from a birth date. But none of these methods rely on real data. Siastro does it differently, the SiastroGPT AI model is trained on millions of real public profiles and finds psychological patterns rather than mythological symbols.

Why neuro-compatibility beats horoscopes and zodiac signs

A horoscope splits everyone into 12 types by zodiac sign. Numerology and destiny matrices split people into a few dozen types. SiastroGPT analyzes thousands of psychological patterns from birth date and place, comparing the profiles of two specific people across 6 independent levels, sexual compatibility, depth of feeling and care, freedom and trust, shared interests, mutual understanding, practicality and comfort.

A compatibility test for a man and a woman — how it works

Enter the birth date and birth place of both partners. SiastroGPT matches psychological profiles from a database of 2 million verified profiles and instantly calculates the K neuro-compatibility coefficient. No questionnaires, no questions — just a date and a city.

A compatibility matrix by birth date — without esoterics

Unlike a destiny matrix or the Pythagorean square, Siastro's result isn't based on numerological symbols but on the statistics of real people. SiastroGPT studied public profiles of musicians, scientists, politicians and athletes with confirmed birth dates — and found real psychological patterns.

Numerology compatibility vs neuro-compatibility

Numerology reduces a birth date to a single number and gives a generic description. Neuro-compatibility compares two full psychological profiles and produces a K coefficient for this specific couple — not for all Taureans or all "twos". That's the key difference.

A free compatibility test with no sign-up

The test is completely free and requires no registration. Enter the couple's details — a result with a breakdown across all 6 compatibility levels appears instantly. Want to check your K with other people? Sign up for the Siastro social game and check compatibility with all its members.