Every seed packet and plant label is written in hours of direct sun. Almost nobody knows what their own garden, balcony or roof actually gets.
Sunplot answers it with a number. Not where the sun is — that is the easy half — but how much of it reaches this spot, once the fence, the garage and next door's lime tree have taken their share.
Point the camera at the skyline and sweep a finger along the tops of the roofs and trees. Sunplot walks the day a minute at a time and counts only the light that gets through.
What it tells you
Hours of direct sun today, graded the way plant labels are: full sun, part sun, part shade, full shade.
When the sun arrives and when it leaves, and how the day is broken up.
The whole year: when full sun starts and ends, and the weeks that get none at all.
What it does not do
No account. There is nothing to sign up for.
No servers. Everything is worked out on the phone and works with no signal.
No subscription. One payment unlocks the year view and the widget, for good.