
myCalorieTracker.fit
BMR Calculator by Calculator.net
BMI Calculator
TDEE Calculator net
BasedHealth.ai
MyFitnessPal
Calorieasy
Accurate fitness and nutrition calculators built on real science — from BMI, BMR, and TDEE to body fat, macros, and hydration. TrainCalc helps you understand your body better with instant results, clear explanations, and practical guides.

Mockaroo
JSON Generator
MockTurtle.net
ExtendsClass's JSON generator allows to generate random JSON data from a template.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | traincalc.com | extendsclass.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Remote / Global · 1 - 9 employees · 2025 | 2019 |
| Listed in |
In their own words, as submitted to SaaSHub.


TrainCalc is a collection of science-based fitness and nutrition calculators designed to help you understand your body with accuracy and clarity. From BMI, BMR, and TDEE to body fat, macros, ideal weight, and hydration, each calculator uses validated medical formulas and explains the results in...
This free online tool allows to generate JSON dataset. You can generate multiple JSON files exported to a zip archive. No limits. No registration.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of ExtendsClass JSON Generator yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing TrainCalc and ExtendsClass JSON Generator.
TrainCalc's answer
TrainCalc stands out by combining scientific accuracy, elegant simplicity, and expert engineering. Every calculator is built on verified medical formulas and optimized with modern tech for speed, precision, and clarity. It’s science explained beautifully — not just numbers on a screen.
TrainCalc's answer
Because TrainCalc is engineered by a seasonned developer with deep expertise in performance, data accuracy, and UX. Most fitness sites are cluttered or outdated — TrainCalc is fast, mobile-ready, and transparent about every formula. You get reliability, clarity, and trust — all in one place.
TrainCalc's answer
People who value clear, accurate health information and dislike noisy, ad-heavy sites. Our users include fitness enthusiasts, trainers, nutritionists, and everyday individuals who want real numbers, clean design, and instant answers — all without signing up or downloading an app.
TrainCalc's answer
TrainCalc began as a side project by Alex, a software engineer, and Tati, a yoga and wellness enthusiast. We wanted tools that were accurate, fast, and actually explained the science behind the numbers. So we built them — from scratch — with top-tier engineering, real formulas, and no shortcuts. What started as a personal need became a global wellness project.
TrainCalc's answer
• Fitness coaches using calculators to personalize meal plans
• Nutritionists referencing formulas in consultations
• Health bloggers embedding our calculators in articles
• Everyday users tracking body composition and calorie needs
TrainCalc's answer
Built with Laravel, Filament, and TailwindCSS, powered by Dockerized infrastructure and Cloudflare CDN for global speed and reliability.
Share your experience with using TrainCalc and ExtendsClass JSON Generator. For example, how are they different and which one is better?
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