Online Ruler vs Meridian

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

Online Ruler compared with Meridian
Detail	Online Ruler	Meridian
What it does	Measure anything on your screen with pixel-perfect accuracy	Interactive US time zone map with current local time and daylight saving exceptions
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	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	Interactive county-by-county time zone map Live local time display across all US zones Daylight saving time status for each zone County search functionality State pages with detailed zone information Detailed boundary guides for complex zones Stock market hours tracker
What makes it different	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	County-level precision for exact time zone boundaries Based on legal US time zone regulations (49 CFR Part 71) Static site with no server queries or tracking Handles daylight saving time variations by state and region
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)	4 +3 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	17	0
Referring domains (Majestic)	4	0

4 details filled in for both companies.

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