Soleil
Coming soon

Know the UV.Enjoy the day.

Live UV where you are, a protection check tuned to your skin, and sunscreen reminders that keep up with the day.

Coming soon to the App Store

For iPhone & Apple Watch

The toolkit

Six things Soleil does well

  • Now

    Live UV

    The index where you are, its category and today’s peak — with the source and how fresh the reading is shown beside it.

  • Personal

    Protection check

    Your skin type, SPF, clothing and the current conditions become one clear thing to do next.

  • Reminders

    Sunscreen timing

    Two hours at most, and sooner after swimming, sweating or towel-drying. Reapplying never resets your time outside.

  • Outside

    Sessions

    Start an outing and Soleil keeps elapsed time and each person’s cover in the same place.

  • Your people

    Family

    Profiles for everyone you look after, a quick cover-up glance and separate reapply reminders.

  • Apple Watch

    Real Sun

    Time in Daylight from your Watch, drawn against the day’s UV curve.

How it works

A sunnier day in four moves

  1. Check the sky

    See the live UV index, its category and when today peaks.

  2. Choose your cover

    Set skin type, SPF, clothing and shade. The protection check adjusts.

  3. Start the day

    Run a session for whoever is outside and keep sunscreen timing organised.

  4. See your Real Sun

    Look back at when your daylight actually happened.

The Sun Window

The UV answer, in one look

  1. One card

    Open Soleil and the sky answers first.

    No dashboard to decode. The Sun Window leads with the live UV index for where you are.

  2. The reading

    The index, its category, and how fresh it is.

    UV and conditions come from Apple WeatherKit, with the source and time of the reading shown.

  3. The day’s shape

    Today’s peak, cloud cover, humidity.

    The hourly curve shows when the strong part of the day arrives — before you go out in it.

  4. Your check

    What to do now, not how long you may stay.

    Your skin type and SPF turn the reading into a timely protection check. Soleil never presents time as permission.

Coming soon to the App Store

Every kind of day

Made for every kind of sunny day

and the everyday bits between

Why Soleil

Useful, and yours

Everything Soleil learns about your sun stays on your iPhone. No account to make, no analytics, no advertising, no cross-app tracking.

Wellness guidance, not medical advice

  • Live local UV
  • Private by default
  • No account
  • Family-ready
  • Apple Watch
  • Practical reminders
  • Your day, in context
  • Widgets
  • Live Activity
  • Peak UV alerts
  • Sunscreen timing
  • Cloud & humidity
  • Skin type scan
  • History & trends

Real Sun

Forecasts tell you what might happen. Real Sun shows the daylight you actually had.

Gentle light, low index

Daylight early in the day lands while UV is still low.

The strongest hours

Around midday the index reaches today’s high. Soleil shows how much of your daylight happened here.

Softening again

Late daylight sits on the falling side of the curve.

Real Sun reads Apple Watch Time in Daylight with your permission. Soleil never writes to Health, and daylight is never presented as an allowance.

Real Sun UV

Questions

Common questions

How long can I stay in the sun without burning?

It depends on the live UV index and your Fitzpatrick skin type: roughly 15 minutes for very fair skin at UV 6, over an hour for deeper tones. Soleil shows the live UV and turns it into a timely protection check rather than a countdown.

Read all the sun guides
What UV index is safe?

Below UV 3 is low risk for most people. From UV 3 upwards, the WHO recommends protection: shade, clothing and sunscreen. Soleil tells you plainly when your local UV crosses that line.

Read all the sun guides
What’s the best UV index for tanning?

Colour develops from about UV 3, and a moderate index of 3–5 lets skin respond gradually with lower burn risk. No UV tan is risk-free; pacing and never burning are what matter.

Read all the sun guides
How often should I reapply sunscreen?

At least every two hours, and immediately after swimming, heavy sweating or towel-drying. Soleil schedules reapply reminders per person, sooner when you log water or towelling. Reapplying never resets your time outside.

Read all the sun guides
How much sun do I need for vitamin D?

In summer, about 10–30 minutes of midday sun on forearms a few times a week for lighter skin; longer for deeper tones. Soleil deliberately doesn’t turn sunlight into vitamin D numbers; it records your real time outside instead.

Read all the sun guides
Read all the sun guides

Take Soleil with you.

Live UV, a protection check for your skin, and reminders that keep up with the day.

Coming soon to the App Store

iPhone & Apple Watch

No account. No tracking. Your history stays on your device.