JMag Builds logo — an abstract leaping figure

JONATHAN MAGNO BUILDS

I build apps and ship them in public.

Real, playable things — not pitch decks. Everything below you can try right now.

Featured projects

Hero Rank Uprise logo — a red raised fist on black

Hero Rank Uprise

Actively building — new features weekly

Bodyweight challenges with real rank progression. Climb from C to S with reps, not gimmicks.

Play Now100reps.fit
Gap Challenge logo — a black silhouette mid broad jump on gold

Gap Challenge

Actively building — new features weekly

A standing broad jump game your camera referees. Jump, get measured, beat your gap.

Play Nowthegapchallenge.com

In progress / back burner

SAFU Movement — RPG Adventure mode, a character running toward the Slime Tower with a camera tracking overlay

SAFU Movement

Early MVP — being reworked

A movement-skills trainer I started before the other two took over. The current version is rough but playable.

Play the demo

Follow the build

Progress updates, process posts, and lessons along the way — straight from my X feed.