SunDose
The SunDose Blog
Tan smarter, not by guesswork.
Guides and updates on UV index awareness, sun-exposure timing by skin type, skin sensitivities and hydration — from the team behind the SunDose iPhone app.
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Product
UV Index App for iPhone: What Weather Apps Leave Out
Your iPhone already shows a UV number. SunDose adds the part that decides your day: a skin-type timer, SPF and medication flags, hydration and Live Activities.
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Guides
What Is the UV Index? The Scale, Explained
The UV Index measures sunburn-causing ultraviolet radiation on a 0 to 11+ scale. The WHO advises sun protection from 3 up. Here is what each band means.
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Guides
August Sun: Why Heat and UV Peak Weeks Apart
The hottest weeks of summer arrive about three weeks after the strongest sun (NWS). On 11 August the sun sits at its 2 May height — here is what that changes.
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Guides
Tanning at UV Index 10: A Guided 20-Minute Session
UV 10 sits in the WHO's “very high” band. What SPF, skin type, medication and hydration each change about a 20-minute session — and when shade is the better call.
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Introducing SunDose: Glow Smarter, Tan Safer
Meet SunDose, the free iPhone app for more UV-aware tanning: real-time UV (WHO advises sun protection from index 3+), a skin-type session timer and routines.