Welcome to SunTanApp

Optimized for your day in the sun!℠

Getting a beautiful, even tan shouldn’t come at the cost of sunburn, skin damage, or guesswork. That’s where SunTanApp comes in — a science-backed, user-friendly tool that helps you tan smarter, not longer.

We help you track sun exposure in real time using sophisticated UV analysis, skin type modeling, and personalized recommendations. You’ll never again wonder how long is too long in the sun.

🌞 What Does SunTanApp Do?

• 📲 Tracks your real-time sun dose (we call it TDU — Total Dose Units in (kW/m²)^4/3s
• 📍 Uses your location and weather to understand UV levels minute by minute
• 💆 Adapts to your skin type, gender, and age — because sun sensitivity isn’t one-size-fits-all
• 📉 Models your natural tanning progression and fading over time
• 🧴 Accounts for SPF, body rotation, and even partial shade exposure

All this happens behind the scenes — you just get clear, friendly prompts like:

• “Time to rotate!”
• “Session complete — you’ve hit your optimal sun dose for the day.”

🌿 Why Not Just Use a Timer or UV Index?

Because your skin isn't a stopwatch.

Every body region responds to UV differently. Your arms and face might tan quickly, while your legs or back need more time. And UV levels don’t just vary by cloud cover — they’re affected by altitude, humidity, pollution, time of year, and even environment reflectivity (yes, really).

SunTanApp handles all of that.

⚠️ Tan Without the Burn

Our #1 priority is helping you build a natural, healthy tan without burning.

That’s why we never push you toward your burn threshold — we calculate the safe, optimal UV dose based on years of dermatological research and adjust it dynamically as your tan deepens or fades.

You’ll tan faster, fade slower, and avoid the cycle of “burn-then-peel” damage that prematurely ages skin and raises cancer risk.

🔬 Why Do We Ask About Age, Gender, and Skin Type?

These factors change how your skin reacts to the sun:

• Skin Type determines your base melanin level and burn threshold
• Gender can influence skin thickness and melanin retention
• Age affects how fast you tan — and how fast your tan fades

We use this to personalize your sun plan, so you’re not using the same logic as someone half your age with twice your melanin.

🤝 It’s Complex — But We Make It Simple

We’ve modeled everything from sun angle to regional melanin decay rates so you don’t have to. What would take a spreadsheet, a UV meter, and hours of research… we boil down to a simple session timer with intelligent reminders.

You just focus on feeling good and enjoying the sun — we’ll handle the science.

FAQ

Why am I peeling if I didn’t burn?

Even when you stay under your burn threshold, UV exposure still stresses the outermost skin cells. This can accelerate your skin’s natural turnover, especially after long or intense sessions. Peeling doesn’t always mean you burned—it’s often a sign of your body shedding older skin as newer, more melanin-rich cells rise to the surface. Hydration, moisturizers, and even rotation technique can affect how smooth this process feels.