Triad Astro reads your birth chart in three astrological traditions at once - Western (Tropical), Vedic (Sidereal), and Chinese (BaZi / Four Pillars) - and shows you where they agree.
Give it a birth date, plus a time and place if you know them, and it calculates all three charts in a single step: Sun, Moon and rising signs, planetary aspects and elemental balance from the Western system; Nakshatra, Navamsa, planetary dignity and the Vimshottari Dasha timeline from the Vedic system; and the Four Pillars, Day Master and ten-year Luck Pillars from the Chinese system.
Most astrology tools give you one system's answer. Triad Astro gives you three, then helps you read the overlap - the themes that show up independently in all three are the ones worth a closer look.
Planetary positions are computed from ephemeris data aligned to NASA JPL standards, and birth places are resolved to coordinates with automatic timezone handling, so charts are accurate to the minute when the birth time is known. Ambiguous place names can be looked up first so you can confirm the right city.
No account or sign-in is required. Just ask for a reading - for example: "Calculate my tri-system birth chart. I was born March 14, 1990 at 7:45am in Bangalore, India."