Quartz Labs
Code What I Love. I develop products that make it simple and rewarding to cultivate other's most meaningful pursuits.
Post Black Belt
Jiu‑Jitsu / BJJ Journal app
Post Black Belt is a purpose‑built BJJ training journal that helps you turn every class and roll into measurable progress. Log sessions in seconds with partners, positions, techniques, and reflections; tag 140+ techniques for instant organization; and revisit what matters with a calendar timeline, heat‑mapped technique tree, and gentle reminders. Smart, lightweight analytics surface patterns—what you actually practice, where you improve, and what you forget—while daily, personalized recommendations keep your focus sharp. Designed for speed and clarity, it fits naturally before, during, or after class so you can train more, think less, and progress with intent.
