A birth chart is a precise snapshot of the sky at the moment someone is born. It records the exact longitude of every planet, the rising sign, and the house each celestial body occupies. When two birth charts are placed side by side, the result is a multi-layered comparison that reveals how two people's planetary energies interact. This goes far beyond a single-sign lookup because it accounts for the ascendant lord, the seventh-house ruler, Venus placement, Mars position, and the condition of Jupiter in both horoscopes.

This tool ingests both sets of birth data — date, time, and location — and computes a full Vedic horoscope for each person. It then performs a chart overlay analysis, checking how one person's planets land in the other person's houses. A partner's Jupiter falling in your second house, for example, can indicate financial support, while their Saturn aspecting your seventh house may point to lessons around commitment. Every such interaction is cataloged and scored, producing a comprehensive compatibility portrait that covers emotional rapport, intellectual alignment, physical attraction, shared ambitions, and family outlook.

In Vedic astrology, planets cast aspects — directional lines of influence — onto specific houses and other planets. When comparing two charts, these cross-chart aspects become the backbone of compatibility analysis. A benefic aspect from one person's Jupiter to the other's ascendant lord fosters mutual respect and generosity. A harsh aspect from one person's Saturn to the other's Moon can introduce emotional heaviness that both partners need to navigate with awareness.

The tool evaluates all major Vedic aspects — the seventh-house aspect common to every planet, plus the special aspects of Mars (fourth and eighth), Jupiter (fifth and ninth), and Saturn (third and tenth). It also examines conjunction and opposition patterns between the two charts. When multiple benefic cross-aspects stack up, the relationship tends to feel effortless and supportive. When malefic cross-aspects dominate, specific friction points emerge that conscious effort can mitigate. The Advanced report itemizes each aspect so you can see exactly which planetary pair creates harmony and which demands extra attention.

Scores above 70 percent indicate a strong natural alignment between the two birth charts. Couples in this range typically find that communication flows easily, values overlap significantly, and life goals point in similar directions. Disagreements still occur, but the underlying planetary support makes resolution feel cooperative rather than adversarial. These pairings often experience a sense of familiarity from early interactions.

Scores between 40 and 70 percent represent a moderate compatibility zone where genuine strengths coexist with clear growth areas. The Easy report will highlight which dimensions are strong — perhaps emotional bonding and intellectual wavelength — and which need deliberate nurturing, such as financial outlook or family expectations. Relationships in this band can thrive when both partners invest in understanding the specific gaps the chart reveals.

Scores below 40 percent signal significant planetary friction across multiple dimensions. This does not make a relationship impossible, but it does indicate that the default energetic current runs against easy harmony. The Advanced breakdown becomes especially valuable here because it pinpoints the exact kuta and aspect mismatches. With that knowledge, couples can proactively address the weakest links — through open dialogue, adjusted expectations, or even remedial measures suggested by classical Vedic tradition — rather than being blindsided by recurring patterns.