Fujiyn

Welcome to App!

This provides users with professional and convenient applications, and is committed to building a high-quality and humanized service platform. We constantly improve and focus on the user experience, providing a complete functional experience through simple and understandable pages.


24/7, anytime, anywhere!


Main features:
Simple interface, excellent user experience . This is a professional-grade tool designed for automotive enthusiasts, mechanics, and performance tuners.This app allows you to calculate and compare gear ratios, simulate speed and RPM performance, and visualize differential mechanisms in 3D. Whether you’re optimizing a drivetrain setup or learning how gear ratios affect acceleration and fuel economy, this app has you covered.!

Download the app and enjoy the app.