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RepMaths 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.

RepMaths compared with Spin the Wheel
DetailRepMaths logo RepMathsSpin the Wheel logo Spin the Wheel
What it doesFree fitness calculators for strength, training, nutrition and body composition 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
  • One-rep max estimation from weight and reps
  • Bench press, squat, deadlift and overhead press max calculators
  • 5/3/1 training cycle generator
  • TDEE and BMR calculators
  • Macro and protein intake calculators
  • Body fat percentage estimation using US Navy method
  • Barbell plate loading calculator
  • RPE and RIR conversion chart
  • Calorie deficit and weight loss timeline calculator
  • Warm-up set generator
  • 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
  • All formulas and sources cited on every page
  • No sign-up required to use calculators
  • Built on established, peer-referenced formulas from fitness and sports nutrition literature
  • Works in both pounds and kilograms
  • Built by a lifter
  • 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)Not checked yet no change since last check4 no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)1314
Referring domains (Majestic)13

4 details filled in for both companies.

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