Helios — Solar Sun Path AR

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About this app

Helios is an augmented-reality solar planner. Point your phone at the sky and watch the sun's path overlaid on what your camera sees — today's arc, the summer and winter solstice extremes, and the moon's nightly journey.

When you're thinking about installing solar panels, the question that matters most is: where will the sun actually shine on your roof, and where will trees, buildings or terrain get in the way? Helios answers it.

▸ AR SUN PATHS
See where the sun rises, peaks, and sets — overlaid live on the world through your camera. Sweep across your roof or yard and watch the today, summer, and winter sun paths in their real positions.

▸ MAP YOUR SHADE
Pan the camera across the sky a few times and Helios builds an obstruction map of your site. Trees, buildings, terrain — anything in the sun's way gets tracked. Segments of the sun's path that hit obstructions turn red, so you can see at a glance how much daylight a panel would lose at this location.

▸ MONTHLY SOLAR REPORT
Get a month-by-month yield estimate for your site in kWh/m², based on clear-sky physics and your obstruction map. Helios recommends the best panel tilt and facing based on the shading you've mapped — not abstract textbook angles. One tap applies it.

▸ MULTI-FACE ROOFS
Got panels on two sides of a gable roof? Helios handles split layouts — east + west, different tilts, custom area splits.

▸ EXPORT AND SHARE
Export the report as a one-page PDF for proposals, or a portrait image for messaging. Solar contractors, this is for you.

▸ MULTIPLE SITES
Each site is saved automatically by location. Name them ("Home", "Customer X's roof"), revisit anytime. Free version keeps your 3 most recently-scanned sites unlocked; Pro unlocks unlimited saved sites for installers and serious planners.

▸ PRIVACY
Everything stays on your device. Helios has no servers, no accounts, no analytics, no tracking. Your scan data, your location, your camera frames — all local. The free version shows one banner ad on the report screen (Google AdMob); Pro removes it.

▸ NO INTERNET REQUIRED
After the first launch, Helios works fully offline. GPS, camera, and sensors are all you need. (Some features that talk to Google's servers — ads, in-app purchases — obviously need network when used.)

Available in English, Spanish, German, French, Italian and Portuguese.

Made by Hellwarp.
Updated on
Jun 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit

What’s new

Welcome to Helios! Point your phone at the sky to see the sun's path in AR, map the shade at your site from trees and buildings, and get a month-by-month solar yield report — export it to PDF or image. Save multiple sites, tune panel tilt and facing, and plan solar from anywhere. Fully offline after first launch. Now in 6 languages. Made by Hellwarp.