Luke Duff

MYOS

The system that runs my whole business

My own productPrivate internal tool
Client
My own product
Sector
Business operations software
Location
United Kingdom
Service
Own internal tool
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The build, scrolling as you scroll.The build. Drag inside each frame to look around.

myos-showcase.vercel.app (opens in a new tab)
MYOS on a computer
MYOS on a phone

About this project

Running solo meant juggling Notion, spreadsheets, accounting software and a pile of freelance tools that did not talk to each other. MYOS replaced the lot: clients, projects, invoices, tasks, expenses and calendar in one place, plus finding leads, auditing their sites and drafting the outreach. It runs locally, holds real client data, and never sends an email without me clicking send.

What I set out to do

  • Replace Notion, spreadsheets, accounting software and scattered freelance tools with a single system that actually holds together.
  • Cover the full delivery side of the business: clients, projects, tasks, invoices, expenses and a calendar.
  • Cover the revenue side too, with a lead engine that finds prospects, audits their sites, scores them and drafts outreach messages.
  • Keep everything local and private, because the app holds real client data that should never leave the machine.
  • Default to free local AI models so running costs stay near zero, with paid models available as a conscious opt-in.

What I built

  • A fully working local application that replaces the previous mix of Notion, spreadsheets and separate tools with a single, coherent system.
  • Both sides of the business, delivery and revenue generation, now run through the same app rather than across disconnected tools.
  • An email safety rule enforced at the code level, not just as a convention, so accidental sends are not possible.
  • AI features available throughout the app with running costs controlled by defaulting to local models and capping monthly spend.
  • A site scanner that can audit prospects and clients safely, using a pinned crawler and a consistent rule library.

Want something like this?

Send me a message about what you need, or book a call.

I reply the same working day, in UK hours.

Or ring 07935 996850. If I can't pick up, leave a message or WhatsApp me.

5.0 from 31 Google reviews (checked Nov 2026)