# Sunperch — Balcony Solar Check & Rules

> Balcony Solar Check & Rules (iPhone/iPad app by Kongyang Li.)

- Source: https://appshunter.io/ios/app/sunperch/id6821022234 (this page in markdown: same URL + `.md`)
- Developer: [Kongyang Li](https://appshunter.io/developer/6821022236)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 2 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-10-29
- Data updated: 2026-10-30

## What is Sunperch?

Will your balcony pay for plug-in solar? Find out in about a minute, before you buy a kit.

Lay your iPhone flat on the railing where the panel would hang. Sunperch reads its direction and tilt, scans the trees and buildings that shade it, and estimates how much electricity it could make, what that saves on your bill, and how long it takes to pay back.

WHY NOT A ZIP-CODE CALCULATOR?
Most online solar calculators assume a tilted, south-facing roof. A balcony panel hangs nearly upright, faces wherever your building faces, and sits in your neighbor's shadow. That can cut output by a third or more. Sunperch measures your real spot.

MEASURE THE SPOT
- Direction and tilt from your phone's sensors
- Metal railing confusing the compass? Point the camera at the sun once to correct it
- Sweep the camera across the skyline to mark trees, buildings and the balcony above

SEE WHAT IT WOULD MAKE
- Yearly output as a range, plus month-by-month kWh
- Bill savings at your state's electricity price, and a payback range
- A spot score that compares your railing with an ideal south-facing panel
- Compare mounting options: flat on the railing, angled out, or low on the floor
- Model checked against NREL PVWatts in 10 U.S. cities, within about 6% on average

KNOW YOUR STATE'S RULES
- Plug-in (balcony) solar rules for all 50 states and DC: status, effective dates, power limits, certification, utility notice, and renter and HOA protections, with links to the bill text
- Check your kit's inverter output and certification against your state's rules, with a clear next step for each one
- Rule data is checked for updates every week

RENTING OR IN AN HOA?
- Create a PDF report with your measurements, shade chart and estimate
- Draft a written notice for your landlord, HOA or utility, then review and edit every line (in English)

PRIVATE BY DESIGN
No account, no ads, no tracking. Location, camera and measurements are processed on your iPhone. Photos are never saved or uploaded.

FREE
Every feature is free in this launch version. If paid upgrades come later, you keep everything you have today.

GOOD TO KNOW
Sunperch gives estimates and reference information, not legal, electrical or financial advice. Laws change. Always check the bill text, your utility, and your landlord or HOA before you install.

Available in English and Simplified Chinese.

## Is Sunperch safe?

Not enough ratings yet to assess Sunperch.

## Is Sunperch legit?

Sunperch has limited verification signals. The AppsHunter Legitimacy Score for Sunperch is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-29

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-30.*