ArraySurvey
Solar site walk to a quote
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Walk the roof once. Leave with the number.
ArraySurvey is a solar site-survey app built for the technician standing at the house. One job is one house, and across the top of it runs a rail of seven stops — Site, Roof, Shade, Layout, Electrical, Production, Proposal — in the order you walk the property. Each stop feeds the next, so by the last one the proposal is already priced.
SITE
• Customer, address, and who walked it.
• Tap "Use my location" and your latitude sets peak sun-hours, the best tilt, and the winter noon sun angle.
• Enter the electric bill — monthly amount, rate, kWh — and the app knows the yearly usage the design has to beat.
ROOF
• One card per roof plane, or a ground mount or carport.
• A roof canvas on a one-foot grid, ridge at the top. Type the eave width and eave-to-ridge depth and the plane draws itself.
• Drag the corners to cut hips and notches. Add a corner where the roof line turns; reset to get the plain rectangle back.
• Compass and Level tools help record roof facing and tilt.
• Pick the roof material.
SHADE
• Tap the roof to drop a vent, chimney, skylight, HVAC unit, tree, or dormer.
• Each one casts its winter-noon shadow band across the plane, drawn toward north from its height and your sun angle.
• Drag to move it, tap to change its size. Shade loss and usable area update live as a percent.
LAYOUT
• Choose the panel from the catalog, portrait or landscape.
• Set the fire setbacks — 18 inches at the edges and 36 below the ridge by default.
• The plane tiles itself with modules, skipping every cut in the outline and every keep-out around an obstruction.
• Tap a module to skip it; tap again to bring it back. Module count and kW show per plane and for the whole job.
ELECTRICAL
• Inverter type and model — string, microinverters, or hybrid — plus optimizers, battery and unit count, racking, DC and AC disconnects, and a production meter.
• A string plan for every plane from the NEC 690.7 cold-day and hot-day temperature math: the fewest and most modules a string can carry on that inverter.
• The service panel: bus rating, main breaker, open spaces, meter location, and a photo of the panel label.
• Review NEC 705.12 service-panel design-aid findings.
PRODUCTION
• Kilowatt-hours per year, with a 12-month bar chart underneath.
• A per-plane breakdown showing each face's orientation factor and shade loss.
• Production against the bill, the yearly savings, and the payback in years, with a derate slider for a conservative estimate.
PROPOSAL
• Equipment at catalog price, labor by the watt, permits, your margin, the full quoted system total, and the price per watt. Tax credits and other incentives are excluded; confirm any potential benefit separately with a qualified adviser.
• A plain-English review list with NEC references — good, look again, or fix before permit.
• A proposal PDF on your letterhead: three headline numbers, each roof plane drawn with its modules, the month chart, the price table, and the review list.
• Mark the proposal sent or won.
SUN TOOLS
Four standalone calculators for when you only need a number: a string sizer, a 120% rule check, sun-hours by latitude, and winter shadow length.
ON YOUR PHONE, AND ONLY THERE
Photos tagged to a plane, job notes, and a one-file backup of the whole job. No account, no sign-in, no server — the job stays on the device you surveyed with.
THE PLAN
Three jobs are free forever, and a job you already made never locks. ArraySurvey Pro, monthly or annual, opens unlimited jobs. A Low Volt Labs Suite plan opens this app and the rest of the family.
Built for residential solar site surveys. Production, shade, savings and payback are estimates. Electrical checks are design aids; confirm site conditions, inverter guidance, applicable requirements and AHJ review.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New projects start with zero incentives. Proposals, PDF totals and simple payback now use the full quoted system price, without assuming a federal tax credit. Saved incentive percentages and awarded prices stay intact; jobs with saved assumptions show a review notice. Review any potential incentive eligibility separately.
The developer, Low Volt Labs LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Low Volt Labs LLC
- Size
- 4 MB
- Category
- Business
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- ArraySurvey Pro (Monthly) $24.99
- ArraySurvey Pro (Annual) $249.99
- Suite — All 8 Apps (Monthly) $59.99
- Suite — All 8 Apps (Annual) $599.99
- Copyright
- © 2026 Low Volt Labs LLC