Quick I Ching vs Online Ruler

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

Quick I Ching compared with Online Ruler
Detail	Quick I Ching	Online Ruler
What it does	Free online I Ching hexagram casting and reflection platform	Measure anything on your screen with pixel-perfect accuracy
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Not given	Not given
Key features	Three-Coin casting method Yarrow Stalk method Mei Hua Yi Shu current-time casting Manual Cast entry Visible casting facts Primary, changing, and relating hexagrams Local browser history storage	Smart Auto-Detect identifies your device from a database of 100+ profiles Three calibration methods: auto-detect, screen diagonal, and credit card Place rulers on any edge of the screen in any combination Click-to-measure distances in any direction Live cursor position tracking Dark mode with automatic system preference detection Support for four measurement units: cm, mm, inches, and pixels
What makes it different	Free for all four casting methods with complete interpretation Transparent casting process with visible line values Documented methods preserving traditional conventions Reflective framework, not deterministic prediction	No installation required—runs entirely in your web browser Achieves near pixel-perfect accuracy typically within 0.5mm for well-calibrated screens Completely free with no ads, account, or limitations Calibration saved locally so no need to recalibrate on each visit Works on tablets and mobile devices with touchscreen support
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	2 no change since last check	1 no change since last check
Trust Flow (Majestic)	5	0
Citation Flow (Majestic)	30	17
Referring domains (Majestic)	31	4

4 details filled in for both companies.

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