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TrainCalc
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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 plain language.
Built by a husband-and-wife team โ Alex (software engineer) and Tati (fitness and yoga enthusiast) โ TrainCalc brings a human touch to fitness tech.
Whether youโre tracking progress, planning meals, or learning how your metabolism works, TrainCalc gives you instant, reliable answers without clutter or ads.
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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. Itโs science explained beautifully โ 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 Most fitness sites are cluttered or outdated โ TrainCalc is fast, mobile-ready, and transparent about every formula. You get reliability, clarity, and trust โ 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 โ 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 โ from scratch โ with top-tier engineering, real formulas, and no shortcuts. What started as a personal need became a global wellness project.
TrainCalc's answer:
โข Fitness coaches using calculators to personalize meal plans
โข Nutritionists referencing formulas in consultations
โข Health bloggers embedding our calculators in articles
โข 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.
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Managing reactive state and dependent computations in JavaScript can get complex, especially when combining asynchronous and synchronous data. RS-X is a library that allows you to bind expressions to plain objects and makes the parts of the model used by those expressions fully reactive. Dependent computations automatically update when the underlying data changes. RS-X is framework-agnostic. While it can drive UI... - Source: Hacker News / 6 months ago
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I like htmx, LiveView, React and Solid. They are great at different points, and this is a prototype trying to combine them. Solv's main idea is that stateless servers keep client's state in a volatile cache. It enables server components that are also interactive, which is best of both worlds between LiveView and htmx. Then fine-grained reactivity is added to achieve efficient DOM updates + minimal payload size.... - Source: Hacker News / 9 months ago
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CodeSandbox - Online playground for React
myCalorieTracker.fit - Track your calories and weight โ with everyday language.
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages โ without spending a second on setup.
BMR Calculator by Calculator.net - BMR Calculator is a Basal Metabolic Rate measuring calculator that analyzes how much energy you need according to your goals.
CodePen - A front end web development playground.
TDEE Calculator net - Use the TDEE calculator to learn your Total Daily Energy Expenditure, a measure of how many calories you burn per day. This calculator displays MUCH more!