I got asked how I made the testing rig for my recent experiments with Apple’s on-device LLM.

Instead of explaining, I made an app you can download for macOS Tahoe that lets you test your own prompts.

natbuckley.co.uk/2025/07/02/i...

A week-ish ago I wrote about my experiments with an on-device LLM Apple released for use by apps on the latest beta OSes. A local LLM might be useful in places where you would never use a hosted LLM like ChatGPT, so I wanted to see what’s possible to do with it. natbuckley.co.uk/2025/06/20/d...

Working on interaction design experiments in Swift UI

A damn fine cup of coffee

Though the only real example of this — that I’ve seen — is the sleep tracking data in the iOS fitness app using a visual indicator to show when data is within my “normal” range. Apple also applied the same idea to non-time series data, to highlight the status of multiple variables at once.

In the 90’s, Donald Wheeler published a book about what he called a process behaviour chart, where a visual indicator communicates the range of expected values. It’s such a simple idea!

Though I’d call it the expected range chart.

This mistake is over-interpreting any high or low values as signal, when in reality those values often represent predictable variation.

I briefly went to NYC for work last week. I found a coffee shop which served Earl Grey, so I asked for it with milk, and received what I can only describe as an Earl Grey cappuccino. What you’re looking at here is true innovation.

The breakdown of property's energy performance shows the rating of each component of the score—walls, roof, the heating system, and so on.

Brains process visuals much faster than they do words. There's an opportunity to add visuals to help people scan info quickly.

Each certificate suggests improvements to make the property more energy efficient.

I wanted to show how an interactive approach to presenting this info can make it easier to understand how the costs and benefits of the proposed changes add up.

Left: current presentation. Right: my prototype.

I found that a lot of people don't know these certificates can be accessed for any property in the UK.

What if there was an option to embed a button with a summary of the EPC online, linking back to the report? There could even be a printable badge with an easy way to get to the online certificate.

I wrote an article for The Modern House where I put together ideas showing how the Energy Performance Certificates could be even more useful to people looking for a new home.

Homes that are more efficient are also cheaper to run, and will have lower CO2 emissions. 🧵

Near Haggerston Park

I'd be a fool not to (again) share page 236 from @undermanager.bsky.social's book as printed evidence that I am, in fact, very funny