What is a love compatibility reading?
A love compatibility reading — astrologers call it synastry — lays two people’s birth charts over each other to see how their planets interact. Astronaad reads the real positions of the Sun, Moon, Mercury, Venus, Mars and Jupiter for both of you, then measures the angles between them. Supportive angles (trine, sextile, conjunction) flow easily; tense ones (square, opposition) bring friction — and often the spark. From those contacts the tool scores Romance, Passion, Communication and Friendship, plus an overall match and the element synergy between your two Sun signs.
How Astronaad computes it — and why it’s trustworthy
Astronaad doesn’t hand your birth dates to a chatbot and ask it to guess. Every position is computed from a real astronomical ephemeris, so the same two charts always return the same result — it is deterministic, not invented. Because planet-to-planet synastry doesn’t depend on birthplace, you only need two birth dates to begin; a birth time is optional and mainly sharpens the fast-moving Moon, which makes the emotional and friendship side more accurate. There is no login, no payment and no AI making things up — just the math of two real skies, read in plain language.
What you’ll learn
You’ll see each person’s Sun and Moon signs, an overall compatibility percentage with a verdict, four category scores, and your standout bonds — the tightest planetary contacts written as everyday insight, like “magnetic chemistry and real attraction” for a Mars–Venus link, or “you feel like home to each other” for a Sun–Moon link. The result is free to download and share. Treat it as a fun, accurate lens for a conversation — not a final verdict. If you’re serious about a partner, follow it with the traditional Vedic Matchmaking (36-Guna Gun Milan, doshas & wedding timing) for a marriage-grade reading.
Frequently asked questions
- What is love compatibility, and how is it calculated?
- Love compatibility (synastry) compares two birth charts to see how each person's planets interact with the other's. Astronaad computes the real positions of the Sun, Moon, Mercury, Venus, Mars and Jupiter for both people from an astronomical ephemeris, then measures the angles (aspects) between them — conjunctions, sextiles, trines, squares and oppositions — to score Romance, Passion, Communication and Friendship plus an overall match. Nothing is invented or AI-guessed.
- Is the compatibility checker free?
- Yes — it is completely free, with no login and no NaadCoin. Enter two people's names and birth dates (birth time is optional) and you get an instant, shareable result. For a deeper relationship reading you can move on to our full Vedic Matchmaking, but the Cosmic Compatibility tool itself costs nothing.
- Do I need the exact birth time?
- No. The match works from birth dates alone, because planet-to-planet synastry between two charts does not depend on birthplace. Adding a birth time mainly sharpens the Moon position — the Moon moves about 13° a day — so an accurate time makes the emotional and friendship side of the reading more precise. Without a time, we use noon as a fair midpoint.
- What do the Romance, Passion, Communication and Friendship scores mean?
- Each score reflects a different layer of the bond. Romance weighs Venus, Sun and Moon links; Passion weighs Mars and Sun contacts; Communication weighs Mercury and Moon contacts; Friendship weighs Sun, Jupiter and Moon harmony. Supportive aspects (trine, sextile, conjunction) raise a score; tense ones (square, opposition) lower it but often add the spark and growth a relationship needs.
- What is the difference between this and Vedic Kundli Matching (Gun Milan)?
- This Cosmic Compatibility tool is a Western synastry lens — it reads how your living planets aspect each other and is built to be quick, free and shareable. Vedic Kundli Matching (Gun Milan) is a separate, traditional system that scores 36 gunas (Ashtakoot), checks Manglik and other doshas, and considers wedding timing. If you are serious about a partner, run the full Vedic Matchmaking after this.
- Can two people with low scores still be compatible?
- Absolutely. Astrology describes tendencies, not destiny. A lower score usually points to differences in style — fire-and-water elements, or a few square aspects — which can become the very things that keep a relationship interesting once both people understand them. Treat the reading as a mirror for conversation, not a verdict on your future.