Matthew Chapman

Cybersecurity. Software. Podcasting. Writing.

30+ years in cybersecurity, architecting solutions for large organizations. I also build apps and SaaS products, write books, and host a podcast on technology, AI, and security.

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Matthew Chapman
Cover of Local AI on the Mac by Matthew Chapman

New · Ebook · $9.99

Local AI on the Mac

A practical guide to running large language models on Apple Silicon instead of renting them from the cloud. Ollama and MLX, agent tool-calling, on-device speech, and hybrid routing so the machine stays first and the cloud stays optional.

Get the book — Apple Books Kindle

Work

Apps, tools, and a SaaS product — each with its own home.

My Debt Freedom Plan tab comparing snowball and avalanche payoff methods.

iOS · Privacy-first

My Debt Freedom

See the path to zero without handing anyone your numbers. List debts for free. Unlock snowball or avalanche, log payments, and keep everything on the iPhone — no account, no bank login.

App Store Project page

SaaS · iOS

My Field Crew

Scheduling for landscaping and maintenance crews. Routes, invoices, a booking page, and a native iPhone app for the truck.

Open myfieldcrew.com About

My Field Crew route board for a Monday crew.
Avalon Park — home screen with directory, events, and Spotlight Business.

Official · iOS

Avalon Park

The official app of Avalon Park Orlando. Directory, events, and community news — covered on FOX 35 Orlando as the first community-based app.

App Store avalonpark.app Project page

  • Neat Inbox

    Find junk, promos, and stale mail on the Mac. On-device classification, bulk clean, one-time purchase.

    macOS

  • Paint Calculator

    Room in, gallons out. Finish and primer rounded up to whole cans. Numbers stay on the device.

    iOS

  • DevToolBox

    Fifty-plus utilities that run in the browser. JWT, CIDR, WHOIS, formatters — no account, no upload.

    Web
The Matthew Chapman Podcast artwork

Podcast since 2021

The Matthew Chapman Podcast

Short briefings on cybersecurity, AI, and the systems underneath — plus occasional interviews. The public notebook from three decades in the field.

All episodes Apple Podcasts Spotify
Matthew Chapman

About

I have spent thirty-plus years in cybersecurity — on the front line and architecting solutions for large organizations. This site is the rest of the work: apps and SaaS products, books, and a podcast.

  • Practice Information security, 30+ years
  • Builds iOS, macOS, web, SaaS
  • Show Podcasting since 2021
  • Mail matt@mattchapman.net