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I built “Chaos in Action,” a browser-based double-pendulum simulator that helps students see how tiny differences in initial conditions grow over time. It includes live trajectories, a separation graph, adjustable controls, and five guided classroom activities.Ready-to-use Spanish edition: https://contra.com/products/ZV22mSHb-caos-en-accion-simulador-interactivo-de-pendulo-dobleI also build custom interactive educational simulations for schools, course creators, and training teams: https://contra.com/s/WEZBOXX3-simulador-educativo-interactivo-a-medida?r=marco_emmanuel_carranza_x1vp9ww0
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Evo Academy
The system a dance school actually runs on. Parents enquire, students enrol, teachers take attendance at the door, packages get billed monthly, teachers get paid, and the money lands in a real ledger instead of a spreadsheet.
What I built
Students, guardians and registrations, so the studio can enrol a new student in one screen.
Attendance per class session, on weekly schedules with teacher assignments.
Packages and recurring billing, so the monthly run is a report instead of a reconciliation.
Teacher payroll, calculated from the classes they actually taught.
A studio POS for walk-in payments, and bookkeeping that ties the day's takings together.
Stack
Laravel, PostgreSQL, React, Inertia, Tailwind CSS.
Built for one school first, which is why it fits the way a studio works instead of the way a generic school system thinks it should.
Building an AI-powered learning platform that combines personalized guidance, interactive learning, and AI assistance. Currently focused on the technical development, product experience, and preparing it for real-world users.
Just shared a new case study on Contra 🎬
We recently worked on Firmio, an AI-powered platform, creating a custom motion design video to simplify a complex product and communicate how it works through clear visual storytelling.
From concept and visual direction to animation and final delivery, the entire video was built from scratch around the product and brand.
I’ve shared the full case study on Contra, including the creative approach and final outcome.
Would love to hear what you think
