Now welcoming the Founding Circle — limited early access

Know your skin.
Own your sun.

AI-powered UV tracking, skin-change tracking, and smart protection alerts — all in one beautiful app. Finally, sun care that actually thinks.

☀️ Join the Founding Circle Find your skin type — free →
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  ★★★★★   Trusted by 2,400+ early believers
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Skin Tracking
New photo logged this week
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Protected
SPF 50 · 1h 42m left
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Reapply Now
UV Index rising to 9
Good morning, Maya 👋
Friday · Brooklyn · Clear skies
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Live UV Index
7.4
High · Reapply in 45 min
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87
Days Tracked
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2h 14m
Protected
Afternoon peak UV at 2–4pm today. Apply SPF 50+ before 1:30pm.
How It Works
Protection that actually thinks for you.
Three steps to the most intelligent skin protection routine you've ever had.
01
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SunGuard reads the sky
Real-time UV Index for your exact location, every moment. We factor in cloud cover, altitude, season, and the angle of the sun. Not a generic forecast — your actual exposure.
02
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Track your skin over time
Take a regular photo and see how your skin changes over time. SunGuard keeps every shot consistent so spots and texture are easy to compare — a before/after story that's actually yours, and ready to share with your dermatologist.
03
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Smart alerts, zero guesswork
Personalized reapplication reminders based on your SPF, activity, and the live UV conditions. Swimming? We know. Running at noon? We know. Going about your day? We've got you.

Know Your Skin

The Fitzpatrick Scale

Six ways skin meets the sun. All of them. Your type is the first step to understanding your own relationship with the sun.

I
Type IVery fair. Always burns, never tans.
II
Type IIFair. Usually burns, tans a little.
III
Type IIIMedium. Sometimes burns, tans gradually.
IV
Type IVOlive or light brown. Rarely burns, tans easily.
V
Type VBrown. Very rarely burns, tans deeply.
VI
Type VIDeep brown to black. Rarely or never burns.

Find your skin's sun story.

Join the Founding Circle and be first to know your type, your UV, and your sun. Early access before launch.

We'll only use your email for early access. No spam. See our Privacy Policy.

Features
Everything your skin needs to thrive.
Built for every skin tone, every lifestyle, and every kind of sun-filled day.
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Skin Change Tracker
Take a regular photo and document how your skin changes over time — spots, texture, tone. Your personal skin timeline, consistent enough to actually compare and to share with a dermatologist. Tuned to every skin tone, Fitzpatrick I–VI, not just the ones everyone else was built for.
Your Skin, Over Time
Spots followed6 logged
Sun exposurelogged daily
Texture & tonetracked
Your timeline8 months
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Live UV Intelligence
Real-time UV Index for your exact GPS location. Not a weather widget — a precision tool that accounts for cloud cover, altitude, and time of day. Know exactly what your skin is facing, right now.
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Smart Reapply Alerts
Context-aware reminders calibrated to your SPF, your activity, and live UV conditions. Swimming, running, or just sitting in a cafe window — SunGuard knows the difference and reminds you accordingly.
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SPF Product Scanner
Scan any sunscreen bottle and get an instant compatibility rating for your skin type, concerns, and UV exposure level. No more guessing if your SPF is actually working for you.
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Monthly Skin Summary
A beautiful PDF with your photo timeline, UV exposure summary, and personalized sun-care tips. Beautiful enough to show your dermatologist. Clear enough to actually help them.
Pricing
Simple pricing. Serious protection.
Start free. Upgrade when you're ready. Cancel whenever.
Free Forever
The Shield
$0
always free
  • Real-time UV Index
  • Smart 2-hour reapply timer
  • SPF recommendation
  • Daily UV summary
  • Shareable UV score card
Most Popular
Best Value
The Tracker
$4.99
per month
  • Everything in Shield
  • On-device skin photo tracking
  • Monthly before/after comparison
  • Activity-aware alerts
  • Session history dashboard
  • SPF product scanner
Maximum Defense
The Guardian
$9.99
per month
  • Everything in Tracker
  • Detailed change tracking over time
  • Fitzpatrick-calibrated to your skin tone
  • Monthly skin summary (PDF)
  • Long-term change timeline
  • Priority support
What People Are Saying
Early users are glowing. Literally.
★★★★★
"I've been religious about SPF for years but never actually knew if it was working. Now I can see everything in one place and finally feel like I understand what's happening."
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Simone T.
Graphic Designer · New York
★★★★★
"I'm a runner and I used to burn constantly without realizing it. The activity-aware alerts are a game changer. Now I reapply before peak UV, not after I already forgot."
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André M.
Marathon Runner · Chicago
★★★★★
"As a Black woman, I've never found a skincare app that actually understood my skin tone. SunGuard's Fitzpatrick calibration is real — it finally feels built for me."
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Jade R.
Marketing Director · Atlanta
Founding Circle
Your skin deserves this.
Be first to get it.
Join 2,400+ people in the Founding Circle. Members get 3 months of Guardian free.
No spam. No pressure. Just your skin, protected.
Can’t wait? Open the SunGuard app preview →