01 / The work
Everything, including what isn't finished.
Fifteen pieces of work since March 2026, each carrying its true state. These six
lead, four of them with a case study behind the title. The rest of it
holds the other nine, the migrations case study among them, labelled the same way.
Live on the App Store · Android in progress
Race management for sailing clubs, entry fee to published result. Live on the App Store in
22 languages at flyingstart.app.
- Two iOS apps, a watchOS app, an Android build, a web platform, Stripe Connect payments, an
on-device Core ML model, and a marine instrument stack in testing
- 155,298 lines in nine languages. COCOMO II sizes that scope at a
38-engineer programme costing about £12m. Built solo in 86 commit days for £37,608.
The count, the model and the caveats.
Full production system
Live on the App Store
A free iPhone app that tells you what has been added to or removed from your calendars since
you last looked. Everything is compared on the device; no diary data leaves the phone.
Download it on the App Store.
Idea to App Store
Complete, published, reproducible
The scoring engine behind Flying Start, checked against Sailwave, the software most clubs
already use, so nobody has to take the results on trust: 144,539 comparisons drawn from 1,345
published results files, 99 clubs, ten countries. Method, scraper, engine and data are all
published, so a club that doubts the match can rerun it.
Unmanaged risk to managed risk
Open source · in daily use on my own work
Four models from four vendors on the same diff. Three review it blind to each other, then defend
or refute what the others found; the fourth reads the repository and rules on whatever is
still contested.
One model agreeing with itself is not evidence. The tool that runs it is
open source.
AI-driven code and security review
In use · three engines built and benchmarked
Scenario test harness
The same journey written three ways and raced: a backend driver, Maestro, and the native
engines, XCUITest and Espresso, across simulators, emulators and a handset. The times are not
close, and knowing which engine to reach for beats picking one and hoping.
Automated test harnesses
In development
Agentic delivery curriculum
The course version of how all of the above gets built, for founders, product owners and
the people in an IT department who specify and sign off software rather than write it.
- Eight two-hour sessions scheduled around the day job, three shipped projects, run
through three delivery lifecycles on purpose
- Teaches the guard rails, and the places where agentic development quietly produces
something that looks right and is not
- Open source, so you can go and read it:
panel-review,
session-handoff,
the course itself.
Training in agentic coding