Most portable setups lose power to guesswork — wrong angle, wrong time, wrong conditions. Solar Spotter shows you what your setup can really deliver, so you get more out of every hour of sun.
How it works
All free — no account, no signal needed, no catch.
Unpack, open the app — today's solar conditions for your exact spot, at a glance.
Direction and tilt for the hours you want to charge — not just where the sun is right now.
The panels are optimised and working hard — so you don't have to. Get out there and enjoy yourself.
Features
Built from the ground up for off-grid 4WDs, tourers, vanlifers, and anyone who relies on portable solar. Every feature earns its place.
Optimal direction and tilt for your exact spot — now, +3hr, and +6hr — so you're always set up for what's coming next.
FreeEfficiency rating, cloud cover, temperature, and a 3-hour weather snapshot. Get a read on conditions before you set up.
FreeFull-day sun path from sunrise to sunset, with peak solar hours marked — know when your panels will be working hardest.
FreeThe power your panels really deliver in today's conditions, matched to your setup — live charge in, draw out, and where you'll land by sunset.
ProSet a charge duration, a custom time window, or let the app find the best charging window — updates as the day progresses.
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 — weather-optimised charge planning, precision AR alignment, and estimated output for your actual panels. One price, forever.
For solar blankets & portable panels
Same blanket — more in the battery. Solar Spotter squeezes the most charge out of your setup across your charging window, so more of the day's sun ends up as power you can actually use. More charge in, more time off-grid.
① AR Overlay Mode · Camera
See the charge you're leaving on the table. The AR overlay shows the gap between your blanket's current setup and the best it could do for your charging window — close that gap and capture the extra watts the day's giving you.
② AR Panel Mode · Sensor
Then dial it in with precision. Lay your phone flat on the panel and the live Solar Strength climbs as you fine-tune to the degree — guided by sound, so your eyes stay on the gear, not the screen.
🔊 turn it up — the tones tell you when you've nailed itVisibility
Pop in your panel and battery specs and see the power your setup actually delivers in today's conditions. Add your charge % — or pair via Bluetooth for a live read — and what your gear's drawing, and you'll know where you'll land by sunset, and whether the fridge makes it through to sunrise. Updates every 15 minutes.
Planning
The Best Charging Window updates as the day progresses, factoring in weather and remaining daylight. Set a duration, pick a custom window, or let the app find it — it stays relevant no matter when you open it.
Precision
AR Overlay Mode drops a ghost of where your panels should sit for your charging window — reposition to match. Then lay your phone flat on the panel and AR Panel Mode guides you to the degree, with audio and haptics telling you when you've nailed it.
Trip Planner
Plan a multi-stop trip and see the solar at every stop, day by day — forecast to three days, outlook to nine. When you're back, rate the trip and leave notes for each spot for next time. All trip data stays on your device.
The app
From the solar compass to the daily battery tracker to AR alignment — exactly what you'll be looking at, before you download.
← swipe to explore →
Everything in the free app, plus the Pro tools that turn raw sun data into a plan you can trust.
At your exact spot
For your actual conditions
Free to try — Pro unlocks inside the app · price shown in your currency
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."
Free guides & tools
Straight-up guides on getting the most out of your solar — plus a quick sizer that ballparks your panels and battery in seconds.
Tell it where you're headed and what you run — get a recommended panel wattage and battery size for a typical day there. Then the app shows your real number once you're set up.
Try the sizerPlacement, facing, angle — the three calls that decide how much you actually pull in.
SizingMatch your panels to what you really draw — without over-buying or coming up short.
BatteriesSet up so the fridge and lights cruise through to sunrise — and know it before dark.
Gear & BlanketsReal watts out of the most flexible — and most under-used — setup you can own.
ConditionsWhat you still get when the sky greys over — and how to make a dull day count.