Skip to main content

Built by makers, shipped in public

Sign in

GradeCal vs Spin the Wheel

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

GradeCal compared with Spin the Wheel
DetailGradeCal logo GradeCalSpin the Wheel logo Spin the Wheel
What it doesBrowser-based grade calculator for weighted course grades, final planning, and GPA estimates Free random name picker powered by cryptographic randomness
StageNot given Startup
FoundedNot given 2026
Based inNot given Not given
Pricing modelFree Free
PricingNot given Free forever with no paywalls or hidden fees.
Key features
  • Calculate weighted course grades from multiple assignments and assessments
  • Support for multiple grade formats including percentages, letter grades, and points
  • Final exam score planning to reach a target grade
  • Customizable letter grade scales for different schools and instructors
  • Display both raw and weighted grade averages
  • Support for semester, quarter, and high school grades
  • GPA point calculations with letter-grade conversion
  • No account required to use calculators
  • Browser-based access with save functionality
  • Cryptographically secure randomness using crypto.getRandomValues()
  • Equal probability for all entries
  • Remove and spin again functionality
  • Recent Winners log tracking all decisions
  • Built-in fairness test with 10,000 simulated spins
  • No account or download required
  • Works on any modern browser
  • Client-side application with no data transmission
  • Unlimited entries with auto-resizing segments
  • Multiple wheel configurations for different use cases
What makes it different
  • Handles partial course weights that do not add up to 100 percent
  • Distinguishes between raw averages and weighted averages to show individual assignment impact
  • Automatically converts between percentages, points, and letter grades using customizable scales
  • Estimates the exact final exam score needed to achieve a target grade
  • Works without requiring account creation or login
  • Uses cryptographic randomness instead of predictable algorithms like Math.random()
  • Built-in fairness verification test that runs 10,000 spins to prove equal distribution
  • Completely private with no data stored on servers or shared with third parties
  • Instant results with no signup, download, or hidden costs
Community votes00
DR (Domain Rating by Ahrefs)9 +1 (up) since last check4 no change since last check
Trust Flow (Majestic)80
Citation Flow (Majestic)2514
Referring domains (Majestic)163

4 details filled in for both companies.

More alternatives to GradeCal More alternatives to Spin the Wheel

Ask us