birthchart.io vs KitQuarter

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

birthchart.io compared with KitQuarter
Detail	birthchart.io	KitQuarter
What it does	Birth chart calculator	Free online calculators with transparent formulas and instant answers
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Calculate Sun, Moon and rising signs Shows ten planets and aspects Multiple house systems available Private data processing on device Save birth details to browser Support for unknown birth times Historical time zone handling	Shows exact formulas with worked examples for every calculation No sign-up or account required Calculations run entirely in browser with no data upload Input validation with clear error messages Covered by automated unit tests for accuracy
What makes it different	Calculated entirely on your device with no cloud storage No account or login required Uses Astronomy Engine for precise geocentric calculations Explains astrological concepts and limitations	All data stays private in your browser
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 +2 (up) since last check	2 no change since last check
Trust Flow (Majestic)	4	0
Citation Flow (Majestic)	12	10
Referring domains (Majestic)	3	2

4 details filled in for both companies.