CalculatorFox vs RepMaths

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

CalculatorFox compared with RepMaths
Detail	CalculatorFox	RepMaths
What it does	Free online calculators with step-by-step workings and cited sources, embeddable on any website	Free fitness calculators for strength, training, nutrition and body composition
Stage	Startup	Not given
Founded	2026	Not given
Based in	GB	Not given
Pricing model	Freemium	Free
Pricing	Free plan: all calculators with ads, 5 saved calculations, 1 private link. Personal: $29 USD/year or $5/month with unlimited saved calculations, no ads, PDF and CSV export. Advisor: $149 USD/year or $19/month with client-facing branding, scenarios grouped by client, one PDF per client, and priority	Not given
Key features	1,336 calculators across 23 categories Step-by-step calculation workings shown live Cited sources on every calculator page Save and compare scenarios side by side Embed calculators on your website with three lines of code Update shared figures once across all embeds Export results as PDF or CSV Reusable assumption profiles Private read-only links with expiration Client management and reporting 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
What makes it different	Visible calculation working for every result, so you can inspect the math rather than trust blindly Every calculator declares its method and sources in code with checked examples Free embedding with your own branding and no tracking of readers Similar calculators are consolidated to one preferred page to avoid duplicate search results	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	23 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	24	0
Citation Flow (Majestic)	34	13
Referring domains (Majestic)	88	1

4 details filled in for both companies.

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