Most portable setups waste power to guesswork — wrong angle, wrong time, wrong conditions. Solar Spotter gives you the visibility to get more from every hour of sun.
How it works
Everything below is free — no account, no signal, no catch. Three steps to getting more from your solar setup at any campsite, anywhere on Earth.
Open the app and instantly see today's solar conditions — efficiency rating, cloud cover, and temperature. Know what kind of solar day you're working with before you unpack a thing.
The live solar compass shows the optimal direction and tilt angle for your location right now, and for the next 3 and 6 hours. Point your panels where the sun's going, not just where it's been.
The sun path chart maps today's full solar arc — sunrise to sunset — with peak solar hours marked. You'll know when the sun's at its strongest, when to set up, and when to call it a day.
Features
Built from the ground up for off-grid 4WDs, tourers, vanlifers, and anyone who relies on portable solar. Every feature earns its place.
Real-time azimuth, altitude, and optimal tilt for your location. See the best direction now, in 3 hours, and in 6 hours — so you're always ahead of the sun.
FreeEfficiency rating, cloud cover, temperature, and a 3-hour weather snapshot. Get a read on conditions before you set up.
FreeFull-day sun path chart from sunrise to sunset. See when solar intensity peaks at your location so you know when your panels will be working hardest.
FreeEnter your panel and battery specs. See estimated watts, recharge rate per hour, and projected daily harvest — for your actual setup, in today's conditions.
ProSet a charge duration, a custom time window, or let the app find the best charging window — updated live as conditions change throughout the day.
ProVisual overlay mode shows where your panels need to go. Panel mode guides you to the exact angle with real-time audio and haptic feedback. Precision every time.
ProThe free app gives you the sun's position and today's conditions. Pro goes further — estimated output for your actual panels, weather-optimised charge planning, and precision AR alignment. One price, forever.
Visibility
Enter your panel wattage, type, and battery specs. Solar Spotter estimates your output in watts, your recharge rate per hour, and how long to reach 80% — based on your location and today's conditions.
Planning
The Best Charging Window updates throughout the day, factoring in weather and remaining daylight. Set a duration, pick a custom window, or let the app work it out — it stays relevant no matter when you open it.
Precision
AR Overlay shows a ghost of where your panels need to be. Then Panel Mode uses your phone flat on the panel for degree-level alignment with live audio and haptic feedback. It'll tell you when you've nailed it.
One price. No subscription. No monthly fees. Pay once, use forever — even offline in the middle of nowhere.
Available inside the free app · iOS & Android
Built for the community
"A SOLAR TOOL THAT JUST WORKS.— No ads. No tracking. No subscription. No strings.
FREE TO DOWNLOAD. USEFUL FROM DAY ONE."
The free app gives you a real-time solar compass, optimal panel tilt, solar conditions, and the full day's sun path — no account, no signal, no strings.
Pro unlocks estimated output for your actual setup, weather-optimised charge planning, and precision AR alignment. One-time purchase. Use it forever — even in the middle of nowhere.