birthchart.io vs Calculator Cosmos

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 Calculator Cosmos
Detail	birthchart.io	Calculator Cosmos
What it does	Birth chart calculator	Free online calculators with step-by-step working
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	77 focused calculation tools Shows formula and working steps No sign-up required Private calculations in browser Categories for maths, finance, health, time and more Instant calculation with transparent results
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	Shows complete working and formula for every calculation Results run locally in your browser for privacy Independent library with transparent methodology
Community votes	0	0
DR (Domain Rating by Ahrefs)	2 no change since last check	11 no change since last check
Trust Flow (Majestic)	4	0
Citation Flow (Majestic)	12	20
Referring domains (Majestic)	3	8

4 details filled in for both companies.