New posts as the app grows. Questions or a topic you want covered — hello@inkaroom.com.
Every phone has a magnetometer. It is a good one, right up to the moment you carry it into a loft. Steel lintels, the water tank, the boiler flue, the wiring in the ceiling below — each one bends the magnetic field a little, and the compass reports the bend as if it were north.
Most survey apps meter you on exports: every PDF costs a credit, so a typo in the client's name costs money to fix. We thought that was the wrong thing to charge for.
Installers pay around £300 for a SolarPathfinder — a polished dome you photograph to see what blocks the sun. The idea is simple: if you know the outline of everything around you, and you know where the sun is at every hour of the year, you can count the hours the panels are in shade.