
TrainCalc
myCalorieTracker.fit
BMR Calculator by Calculator.net
TDEE Calculator net
BasedHealth.ai
MyFitnessPal
BMI Calculator
Calorieasy
Handler
fastlane
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.
Handler is a vibe marketing agent for app marketers. It helps app teams find outlier TikToks, understand what makes them work, and turn proven patterns into clearer creative direction. Todayโs launch focuses on Handler and TikSpy: research winners faster, reduce manual scrolling, and know what to test next.
TrainCalc
HandlerTrainCalc'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.
Handler's answer:
Handler is built specifically for app marketers who want to find what is already working on TikTok. Instead of guessing content ideas, Handler helps teams discover outlier TikToks, understand winning patterns, and decide what to test next.
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 Most fitness sites are cluttered or outdated โ TrainCalc is fast, mobile-ready, and transparent about every formula.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.
Handler's answer:
Handler is focused on TikTok research for app growth, not generic social media management. It helps marketers move faster from โwhat should we post?โ to clear creative direction based on real winning TikToks.
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.
Handler's answer:
Handler is made for app founders, growth marketers, mobile app teams, indie app builders, and agencies that use TikTok to grow consumer apps.
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.
Handler's answer:
Handler was created because app teams spend too much time manually scrolling TikTok trying to understand what content works. We built it to make TikTok research faster, clearer, and more repeatable for app marketers.
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
Handler's answer:
Handler is currently early, so we are not publishing customer names yet. The product is built for app founders, consumer app teams, growth marketers, and agencies working on TikTok-based app growth.
TrainCalc's answer
Built with Laravel, Filament, and TailwindCSS, powered by Dockerized infrastructure and Cloudflare CDN for global speed and reliability.
Handler's answer:
Handler uses AI analysis, TikTok content research, video metadata extraction, creative pattern detection, and a web-based dashboard to help app marketers find and understand winning TikToks.
myCalorieTracker.fit - Track your calories and weight โ with everyday language.
fastlane - Connect all iOS deployment tools into one streamlined workflow
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.
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!
BasedHealth.ai - Track calories with AI
MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.