Antilles Labs

Independent software company

Careful software for the things that matter.

Antilles Labs builds apps for money, health and work, starting with financial management for landlords. We also build custom software for businesses that need something that doesn’t exist yet.

Request a quote See our apps

Our apps

Software we build for ourselves first

Every app starts as a tool we need. They share a rule: the numbers come from tested code, and anything AI suggests is checked before you see it.

Flagship · In development

Financial management for landlords

Rent, expenses and tax records for every property you own, in one place. Built for independent landlords who have outgrown the spreadsheet but don’t need enterprise property-management software.

  • Rent and expenses tracked by property and unit
  • See which tenants have paid, and who is late, at a glance
  • Cash flow and returns for each property
  • Tax-ready records at year end, ready for your accountant
Get early access

macOS · iPhone companion · In development

Ensemble

Hand a whole piece of software work to a team of specialised AI agents, leave for hours, and come back to work you can trust. You keep every decision that belongs to you.

  • Agents for requirements, architecture, building, security, testing and review, wired into workflows that can send work back
  • Every run is a versioned record on disk, so nothing is lost, even after a restart
  • Works with Claude or a local model, from one native Mac window
Ask about Ensemble
Ensemble on the Mac: a ‘Your turn’ screen listing three runs waiting for a decision, with a timeline of what happened overnight.
Ensemble on iPhone: a sheet asking whether to proceed with a plan.

iPhone · In development

A training coach that explains itself

One training plan that adapts to how you perform, recover and feel, and always tells you what changed and why. AI may suggest a change; tested rules decide whether it’s safe.

  • Today’s workout, set by set, with rest timers that work from the lock screen
  • Ask the coach about a sore knee or a short day and get a safer plan
  • Works fully without AI, too
Ask about the training app
The training app's Today screen: a full-body strength workout with a Start workout button.
Logging a set of goblet squats: reps and weight with large plus and minus buttons.
The coach suggesting a gentler exercise after the user mentions a cranky knee.

Self-hosted · iPhone · In development

Household finance that stays on your computer

Every account, balance and transaction in one place. It plans to keep your lifetime taxes low and warns you early, from your real numbers, if the money may not last.

  • Budgets, cash flow and net worth from your own accounts
  • A tax estimate through the year, with the room left before the next bracket
  • Runs on your own machine; your data stays there
Ask about the finance app
The finance app's Home screen: a spending check confirming spending is within the paycheck.
Income and spending by month as a bar chart.
A tax estimate for the year, split into federal and state.

Screens are design mock-ups with made-up data.

Custom software

Need something built? We can help.

We take on a small number of custom projects at a time, from a first version of a new product to the internal tool your team has been asking for.

  • Web apps and internal tools

    Dashboards, admin consoles, customer portals and the workflows that run your business.

  • iPhone and iPad apps

    Native apps designed for the device, including ones that keep working offline.

  • AI features you can trust

    Search and answers grounded in your own documents, with sources, and AI that is checked rather than taken on faith.

  • Integrations and automation

    Connect the systems you already use, move data between them, and retire the manual steps.

  • Cloud and infrastructure

    Hosting, deployment and security on AWS or Cloudflare, sized to what you actually need.

  • Reviews and rescues

    A second opinion on an existing codebase, or help getting a stalled project over the line.

How a quote works

  1. 1

    Tell us what you need

    Use the form below. A few sentences is plenty to start.

  2. 2

    We talk it through

    We reply by email with questions, and set up a call if it helps.

  3. 3

    You get a written quote

    A clear scope, a price and a timeline, before any work starts.

Start a quote

About

A small company that takes care

Antilles Labs LLC is an independent software company. We build products we rely on ourselves, and we bring the same care to the software we build for clients.

  • Numbers you can check

    Money, health and safety decisions come from tested code. AI can suggest; it doesn’t decide.

  • Your data stays yours

    We collect only what an app needs, and several of our apps run entirely on your own devices.

  • Plain language

    Apps that say what they did and why, and quotes without fine print.

Contact

Tell us what you need

Quotes, early access, questions about an app: everything comes through this form, and a person reads every message.

We use what you send only to reply to you. Privacy