AI-native execution OS

The missing OS for modern work.

One system you can trust with your whole day. Stay present today, learn from every day, and let the small changes compound.

Manifesto

We are building a system you can trust with your whole day.

A letter from Luis · 4 min read

Locus was born out of necessity: a system to help us deal with the fast, noisy, high-stress times we increasingly live in.

The starting point was an old idea from David Allen's Getting Things Done: you need one system you can trust with everything — every to-do, every objective, every thing you already did — so your mind can stop running the meta-strategy in the background and be present in what is in front of you, as fully as possible.

The struggle never stops

Runner friends of mine say it half as a joke, but it's true: the struggle never stops. The pace only gets faster.

That's running. It's also life. If you're working at the level you're capable of, you are always in a fight.

To win the day, you have to be present — head down, in the work. A soldier. To win the decade, you have to lift your head — set the strategy, learn from the day, connect it to the ones before it. A general.

You don't get to pick which one you are. You're both, at once, permanently — and neither one covers for the other. A bad plan loses no matter how well you fight it. A good plan loses to a day you never showed up for. Both have to be there, and both have to be good.

So everything rests on the bridge between them: the weeks and months in between, the projects, the goals you set for them. Follow the plan — and keep checking the plan still leads where you want to go.

It's a delicate equilibrium. Willpower alone rarely holds it.

It's usually done one of two ways, or some mix: brute-force discipline, or having a great operational system in place. The first, we count on you for. The second, you can count on us.

The problem with today's tools

Most of the tools we rely on were built before AI, and they still barely use what it can now do: take in huge amounts of context and help you draw real insight from it. It is all one day, yet today's tools split it into separate apps. A to-do list holds the intent and never sees the outcome. A calendar holds the plan and never learns what happened. A timer counts minutes without knowing what they were for. Nothing holds all of it at once — so nothing can learn from it.

We never found what we thought a great solution would look like: one that used all of this rich context to help us win the day and, day after day, the war. So we built one.

Two ideas behind the design

Most of the decisions in Locus come down to two ideas.

The first is a remarkable effect, at work all around us and all through our lives. A line credited to a famous physics genius captures it best:

Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn't, pays it.

Credited to Albert Einstein

Small improvements, repeated, are the whole game.

The second comes from James Clear:

You do not rise to the level of your goals. You fall to the level of your systems.

Atomic Habits

For anything that matters, the system decides — not the ambition.

Put together: the most useful thing we could give you is not a better goal. It is a better system — one you can trust with the whole day, that learns from the day you actually had, and that compounds.

Locus, in three parts

Locus is that system, designed for the productivity side of your life. It lives on your Mac and has three parts:

  1. ExecutionYour time. What you planned to do with the day and what actually happened — intent and outcome, finally in the same place.
  2. InputsYour context. Notes, tasks, projects, habits — everything you mean to do, achieve, or simply keep, structured so the rest of Locus can use it.
  3. AIYour smart pal. Routines, the behaviors you want it to have; Memory, everything it learns about you. Together, a flywheel that compounds today into tomorrow.

Locus will be there day after day, helping you see a little through the gigantic noise of real life, nudging one tiny change once in a while, and letting the changes compound. If the result is not life-changing, it will at least be much better. That is the bet.

Five decisions

Early on we split the system in three: the parts we should build ourselves, the parts we should borrow, and the parts we should leave open for the community to evolve. Most of what follows comes from that split:

  1. We build the armor, not the brain.Rather than rebuild an agentic core, we lean on the state-of-the-art harnesses and put our craft where we truly add value: the sensors, tools, and UI around them.
  2. Choose your model.Your Claude Code or Codex subscription, an API key (say, OpenRouter), or Locus Remote — your choice. Pick the model you prefer, and swap it anytime.
  3. Routines are files.Different personalities want different approaches. So we left this part deliberately open: every AI behavior is a Markdown file — read, edit, share, or add your own.
  4. It gets to know you.The more you use it, the better it adapts — your patterns, your rhythms, what actually works. That picture is a wiki on your Mac; if it's wrong, you fix it.
  5. Your day lives on your Mac.Local-first and private by design: your data, your routines, and everything Locus knows about you stay on your device. You only log in for the subscription.

For the reasoning behind each of these, be sure to check our design ideas blog (coming soon).

We hope you enjoy it.

Luis

Pricing

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