Free iOS App

Know exactly how much solar will save you.

SunEyed calculates your real ROI — using weather data from 40,000+ stations worldwide. No sign-up, no sales pitch.

Download on the App Store
📡 40,000+ weather stations 📴 Works offline 🔒 Your data stays on your phone 🆓 Free for personal use
SunEyed splash screen
Welcome
Electricity usage screen
Electricity Usage
Solar panels screen
Solar Panels
Cost and savings screen
Cost & Savings

Three steps to your solar number

No installer visit needed. No personal information required. Get an honest estimate in under 10 minutes.

Enter your electricity bill

Add your monthly usage (kWh) and rate (¢/kWh). Use exact numbers from your bill or a quick annual estimate.

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Configure your roof

Set panel count, roof pitch, and orientation. Use the compass sensor for precision. Trace trees and chimneys directly on the sun path chart.

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See your payback period

Get annual savings in dollars, monthly production vs. usage, and a break-even year — calculated from real local solar radiation data.

See the full walkthrough →

Precision tools for a real decision

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Real local solar data

NASA/NOAA radiation data from the nearest of 40,000+ weather stations worldwide — not a generic national average.

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Camera obstruction mapping

Point your phone at trees, chimneys, or neighboring rooftops and trace their silhouette directly onto the sun path chart.

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Multi-array roof support

Model east-west split arrays, dormer sections, and different pitches independently — each with its own obstruction profile.

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Monthly usage vs. production

Bar chart overlay showing which months you're over- or under-producing, and how net metering affects your annual credit.

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Net metering support

Model both monthly and annual net metering settlement — the difference can swing your payback by years.

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Fully offline

All calculations run on-device. Your electricity usage, roof config, and results never leave your phone.

Know your numbers before the sales call

Most people get a solar quote without knowing what they should expect. SunEyed flips that — so you arrive informed, not sold to.

✅ No account required
✅ No ads, no tracking of personal data
✅ No salesperson contact info harvested
✅ Free for every homeowner
✅ Rated 4+ on the App Store

Are you a solar installer?

Get in front of homeowners who've already done the math. A SunEyed listing puts your company in front of warm, pre-qualified leads.

Learn about installer listings →