Free, computed on our own ephemeris — not fetched from anyone.
The five limbs of the day — tithi, vara, nakshatra, yoga and karana — together with sunrise and sunset for your city, and the windows families actually plan around: Rahu Kaal, Yamaganda, Gulika and the auspicious Abhijit Muhurat.
These windows are fractions of the daylight span, so they depend on where you are: a panchang computed for Delhi is not valid in Chennai. We always state the city we used, and you can change it.
We compute everything with the Lahiri (Chitrapaksha) ayanamsa and the Drik Ganit method on our own offline astronomical engine. Different almanacs and reckoning conventions legitimately produce slightly different values.