/ black stone row llc
Products, brands, and systems built to compound.
A small studio with a long horizon.
We design, build, and operate our own apps and brands — and take on a few outside builds where the same standard applies.
Studio note · 07
"Build it once. Let it keep working."
- Focus
- Own products
- Horizon
- Years
/ selected work
Built, shipped, and still running.
Onus
Onus turns intentions into commitments you actually keep. You set what matters, Onus keeps the pressure honest — daily check-ins, streak-aware nudges, and an AI layer that reads your patterns instead of nagging on a fixed timer.
Trade Estimate AI
Professional estimates for contractors, generated in the time a quote used to take to start.
CarniLedger
Honest food and macro tracking for carnivore, keto-carnivore, elimination, and lion-diet protocols.
Ghosted: Smart Presence
Your Mac notices when you walk away, and handles the rest.
Also in the row — Rivetory PeakSpy Fridgeboss Rich Spirit Patchwork Ink Fall Heal Loud Discord project
/ how we work
We optimise for the second year, not the launch week.
We are not optimizing for volume. We are optimizing for work that keeps paying — for us and for the people we build with.
About the studio- 01
Own the whole surface
Strategy, design, engineering, and launch under one roof. Nothing gets lost in the handoff because there isn't one.
- 02
Build assets, not campaigns
Every piece of work should still be earning attention or revenue a year later. If it only works on launch day, it wasn't worth building.
- 03
Small surface, deep finish
Fewer features, held to a higher standard. Restraint is the only reliable way to ship something that feels considered.
- 04
Operate what we build
We run our own products in production, which is why our build work assumes maintenance, support, and the second year.
/ journal
What we've learned building.
/ an invitation
Bring us the thing that has to work.
Websites, apps, automations, and the brand systems around them. If it should be built once, properly, and still be earning its keep years from now, we would like to hear about it.