The calculations can be exact. Whether the interpretation is trustworthy depends entirely on which methods are actually being used underneath the score.
✦ Get Your Free KundliThe mathematics behind Kundali matching — planetary positions, house cusps, Nakshatra and Sub Lord calculations — are deterministic astronomy and arithmetic. A correctly-built tool computes these exactly the same way every time, with no room for "more accurate" or "less accurate" versions of the same birth data.
The meaningful differences between online matching tools aren't in the math — they're in which classical methods are included at all. Basic tools stop at the 36-point Ashtakuta score. More complete readings add KP Nadi compatibility (which many practising astrologers weight even more heavily than Ashtakuta), real Mangal Dosha cancellation checks rather than a raw yes/no, and Dasha synchronisation between both charts.
Does it check for classical cancellation exceptions, or just report raw affliction? Does it explain why a score is what it is, or just show a number? Does it acknowledge when two methods genuinely disagree, or silently average them into one falsely tidy verdict?
Not just correct arithmetic — though that matters — but honest about uncertainty, explicit about which classical sources and rules it's using, and willing to show disagreement between methods rather than hiding it behind one clean-looking score.
The Marriage Horoscope report runs six independent methods — KP Nadi, Ashtakuta, Mangal Dosha with real cancellation checks, Cuspal Interlinks, Dasha Synchronisation, and an AI-written summary — and reports honestly where they disagree, rather than smoothing six different signals into one number that hides the nuance.