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Online Ruler vs SpinWheelGen

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 SpinWheelGen
DetailOnline Ruler logo Online RulerSpinWheelGen logo SpinWheelGen
What it doesFree on-screen measuring tools that run in your browser Free online spin wheel generator for games, decisions, and giveaways
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free
PricingNot 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
  • Pre-made templates for classrooms, games, giveaways, and decisions
  • Customize entries, colors, and options
  • Proper randomization logic
  • No signup required
  • Works on any device
  • Save and share wheels
  • Shuffle and sort entries
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
  • No friction - try before signup with everything unlocked
  • Proper randomizer, not fake animation
  • All features free with no paywall
  • Works seamlessly across devices
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check1 no change since last check
Trust Flow (Majestic)25
Citation Flow (Majestic)1821
Referring domains (Majestic)107

4 details filled in for both companies.

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