The Sky tab at 6:30 PM: the sky over Cupertino painted as it is, the day's light as a strip, sunset at 7:25 PM. Turn the dial and it paints any minute of any day.
One email when Sol for iPhone ships. Nothing else, and never shared.
Four screens from the app's own build of 9 September 2026, whole and at the phone's own resolution; refreshed when the app changes.
Know when to step outside
A bell on the evenings worth walking out for. Sol calls tonight's sunset hours ahead, for the place you are standing, and rings you when it is worth it; dawn, golden hour and sunset each have an alert of their own, one switch each. The call, on the web.
See your daylight at a glance
Your daylight where you look first. Sunrise to sunset and the sun's place in it, read without opening anything: twelve widgets on the Lock Screen and the Home Screen, the watch face on the wrist, and a Live Activity that keeps the day's light on the Lock Screen while it runs. Your sky, on the web.
Explore the light ahead
The light of any hour, before you plan around it. Turn the dial and the sky over you is painted for that minute — or the whole Earth with the line of night across it and every city's hour on its pin — so a walk, a photograph or a dinner outside is planned for the light. The sun's place is exact for any day of any year; the cloud is a forecast, and a forecast reaches only about ten days. Golden hour, on the web.
Questions before you install
How does it know a sunset will be worth it?
It reads the cloud forecast along the light's path to the west and the air between, and says in one of four words — little, some, good or exceptional colour — whether tonight is worth it, hours ahead. The sunset pages here make the same call for 88 cities; the app makes it for the place you are standing.
Does it need my location?
For the place under your feet, yes — the phone's own location, and its horizon. The instruments on this site work for 88 cities and any place you type, with your browser's location if you allow it.
Which devices?
iPhone and Apple Watch. A build for Apple Vision Pro exists in the workshop. Twelve languages.
Do I need an account?
No. An account here is for this site — saved plans, rooms, teams — until the app can sign in to it; that is not yet true, and this page will say when it is.
When does it ship?
There is no date to promise. Leave an email above and there will be one message when it does, and nothing else.
What is free on the web, and what does the app add?
| Free on this site today | The app adds | Not yet |
|---|---|---|
| Every instrument for 88 cities and any place you type: sunset and its call, the window, the moon, golden hour, shadow length, the room, the zones planner, the outing, daylight after work | The place under your feet, from the phone's own location, and its horizon | Sign-in shared between the app and this site — an account here is for this site until then |
| Calendars you can subscribe to, embeds, an MCP server for assistants, saved plans and rooms with an account | A bell when tonight's sunset is worth walking out for, and the day's light as notifications | An App Store listing — this page will carry it, and the site will offer the app from every bridge, when there is one |
| A sky painted from the same geometry, in your browser | The sky painted live with Metal, the shadow stage in three dimensions, the orbit room, Siri, twelve widgets, the watch, Live Activities |
The screens are rendered from the app's own build on an iPhone 17 Pro simulator through the same doors the tests use, with no renderer errors in the device's own log; the widget, watch and notification frames are next.
Make time for the light. Sol for iPhone is coming soon.
Sol for iPhone · Coming soon