ItalianoEnglish
How long until the golden hour? Golden opens and tells you, with the sky you have outside your window drawn on the screen. It is not a table of times: it is the Sun right now.
The sky on the screen is the one outside your window. 
Dawn, sunrise, noon, sunset, dusk. 
And how long until the good light, minute by minute.
What it tells you
- Today's times, where you are. Dawn, sunrise, the end of the golden hour, solar noon, the evening golden hour, sunset, dusk.
- What the light is doing right now — night, blue hour, golden hour, daylight — and how long until the next moment.
- The Sun's altitude in degrees, updated as you watch.
- In English and Italian, following the phone's language.
One number paints the whole app
The screen is the colour the sky is, the Sun sits at the height it is really at and in the direction to look for it, and everything moves with it: every colour in the app is derived from the Sun's altitude above the horizon, and from nothing else. That is why there is no "night mode" to turn on, and no moment at which the colours and the times can contradict each other.
The golden and blue hours, as photographers mean them
The golden hour runs from 4 degrees below the horizon to 6 above; the blue hour is the band between 6 and 4 below. Sunrise falls inside the golden hour, which is exactly why the golden hour exists. These are conventions, not astronomy — and they are written out in the app and in the code, so you know what you are looking at rather than taking it on trust.
It works where the day does not end
Above the Arctic circle there are days when the Sun does not set and days when it does not rise. The app says so instead of inventing an hour: it reads the phase of the light off the Sun's altitude, which always exists, rather than off a list of events that up there can be empty.
Your data stays yours
Golden asks for coarse location and nothing else: a kilometre moves sunrise by two seconds, so precise location would be asking for more than it needs. No background location — it looks at the Sun only while you are in the app — no account, no servers: your position never leaves the phone and we never see it. Everything is computed on the device, on a plane too.
And if you would rather not give one, a list of cities is bundled with the app — from Rome to Tromsø — and it works exactly the same way. The list is inside the app, not on a server.
How it is paid for
One banner anchored at the bottom, and that is all: no subscription, no time held hostage.