Johann Roux
Contact

Projects

A selection of things I’ve built.

Products and side projects I’m proud of—and why they’re built the way they are.

Coastal landscape photograph by Johann Roux
Marquesas Islands · Photo © Johann Roux
FitPrimers in progress

A fitness program companion focused on clarity, consistency, and a backend that can grow with the product.

Product iterationMobile-firstReliable backend
fitprimers.com →Open →
FitPrimers exercise screen
FitPrimers program screen
Khonsu Development since 2015

Educational apps that turn curiosity into a treasure trove of information—designed for deep dives, with quizzes to test what you’ve learned.

World of Alphabets
Learn writing systems from all around the world.
100K+ downloads
Open →
World of Dinosaurs
Explore species, eras, and facts—then test yourself.
Educational deep dives
Open →
Freestyle Rap (collab)
Practice freestyle with prompts, beats, and wordplay.
With Lyricspiration
Open →
khonsu.eu →
Previously

Teams and products I’ve helped ship

Ada HealthBCG XOpenSCLadenZeile

I like high standards, measurable outcomes, and systems that stay operable as they scale—technically and organizationally.