The tradition
Western astrology
A different zodiac, a different way of dividing the houses, and a different idea of what an aspect is. EnteAstro keeps it genuinely separate rather than relabelling the sidereal chart.
Tropical, and kept apart
The tropical zodiac begins at the vernal equinox, so 0° Aries is where the Sun stands at the March equinox regardless of which constellation is behind it. A Western chart in EnteAstro is cast tropically from the start — not a sidereal chart with the ayanamsa added back, which would accumulate its own error and would not be the same object.
It also carries Uranus, Neptune and Pluto, which belong to this tradition and to no Indian one. They appear on the Western wheel and on no Vedic chart in this product.
Orbs, stated
Orbs are the part of Western practice with the least agreement, so EnteAstro states its scheme rather than leaving it implicit: a base orb per aspect — eight degrees for the conjunction, opposition and trine, seven for the square, six for the sextile, two or three for the minor aspects — plus two degrees when the Sun or Moon is involved, and nothing else.
It is deliberately conservative. Wide orbs make every chart light up, which feels generous and says nothing.
Applying and separating
An aspect closing on exactness is read differently from one moving away, and EnteAstro computes which from the bodies' actual daily motions — including retrograde motion, which makes a transit approach from the other side. Getting the sign backwards inverts the timing of half a daily reading, so it is computed rather than assumed.
Houses, and where they stop working
Placidus is the default. Inside the polar circles it is genuinely undefined — some degrees of the ecliptic never rise, so they have no day arc to divide — and EnteAstro says so and shows equal houses instead of quietly substituting them.