Online Ruler vs Appliage

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 Appliage
Detail	Online Ruler	Appliage
What it does	Free on-screen measuring tools that run in your browser	Free appliance age finder that decodes serial numbers to find manufacture dates
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Actual-size ruler in cm, mm and inches Bank-card and screen-diagonal calibration Top, left and right rulers with drag-to-measure readout Full-screen mode and browser-zoom warning Image measurement tool Length unit converter Touch dragging support for phones and tablets Local storage of calibration without server uploads	Supports 81 appliance brands including HVAC, water heaters and boilers Decodes using official manufacturer date code rules Uses government energy records and certification directories No signup required Shows recall notices when available Results labeled as Confirmed, Estimated, Candidates or No date 390,732 models on file
What makes it different	Calibration step compensates for browsers' inability to detect physical display size ISO/IEC 7810 ID-1 standard bank card calibration ensures reproducible accuracy All calculations run locally in your browser with no data sent to servers Works on any device with a browser and JavaScript enabled Content follows standards-based principles with no invented precision or fake reviews	Independent research not affiliated with any appliance manufacturer Uses multiple official sources including manufacturer documents and government databases Model records help narrow down repeated year codes
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)	Not checked yet no change since last check	1 no change since last check
Trust Flow (Majestic)	2	2
Citation Flow (Majestic)	18	13
Referring domains (Majestic)	10	12

4 details filled in for both companies.

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