About
Phi is made by Frederik Jacques, a freelance iOS and macOS developer from Belgium.
Frederik has been building apps for Apple platforms for over a decade — from educational tools and creative utilities to games and open-source components. He writes about Swift development on his blog at the-nerd.be.
Phi started as a personal fascination with the Fibonacci sequence and the golden ratio. The idea was simple: take the elegant mathematics found throughout nature and turn it into something you can hold in your hand — a quiet, satisfying puzzle that feels good to play. No rush, no noise, just numbers falling into place.
If you have feedback, ideas, or just want to say hi, feel free to reach out via the contact page.
More Apps by Frederik
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