The app uses a mix of satellite imagery and light sensors installed by volunteers at pubs across the city. It’s crowd-sourced sunshine, which feels both modern and oddly poetic.
There’s even a “Shadow Prediction AI” that learns from historical weather patterns. It can forecast, with surprising accuracy, which pub garden will be sunny on a Tuesday two weeks from now.
And here’s a geeky detail: the app’s icon changes color based on your local UV index. A deep orange icon means slap on the sunscreen and order a pale ale. A pale yellow means a mild day—perfect for a stout.
