Heliodos
AR overlay of the sun's path at solstices, equinox, and now on your camera
New in version 1.0.0
Initial release of Heliodos.
Features:
- AR overlay of the sun path and position over the camera feed
- Shows sun paths at solstices, equinoxes and the current date/time
- Location from GPS or custom set to any place on Earth
- Current time or custom set time
Features:
- AR overlay of the sun path and position over the camera feed
- Shows sun paths at solstices, equinoxes and the current date/time
- Location from GPS or custom set to any place on Earth
- Current time or custom set time
Heliodos is an augmented reality (AR) app that overlays the sun's trajectory onto your live camera feed, so you can see exactly where sunlight will fall at any time of year — right through your phone's viewfinder.
Stand in your garden, on a building plot, or any outdoor space, point your camera at the sky, and instantly see the sun's arc for the summer solstice, winter solstice, equinox, and the current date and time — including any obstacles in the sun's path.
Features
Use cases
Heliodos requires camera and location permissions to function. No data is collected or transmitted.
Stand in your garden, on a building plot, or any outdoor space, point your camera at the sky, and instantly see the sun's arc for the summer solstice, winter solstice, equinox, and the current date and time — including any obstacles in the sun's path.
Features
- AR sun trajectories: The sun's path for the solstices, the equinox, and the current moment are drawn directly over the live camera image.
- Flexible location: Uses your GPS location automatically, or lets you set any place on Earth manually.
- Custom time: Simulate the sun's position at any time of day, not just right now.
- Camera selection: Pinch to zoom to cycle through available back cameras (wide-angle, normal, telephoto).
Use cases
- Gardening: Find out which spots get full sun in summer versus winter before you plant.
- Real estate: Check how much natural light a room or terrace receives throughout the year.
- Architecture & construction: Plan shading, windows, and solar panels with real-world sun data.
- Photography: Scout locations and predict golden-hour angles in advance.
Heliodos requires camera and location permissions to function. No data is collected or transmitted.
- Author: Daniel Kraft
- License: GNU General Public License v3.0 only
- Issue Tracker
- Source Code
- Changelog
- Build Metadata
- Reproducibility Status
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid-
This version requires Android 7.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 3.3 MiB PGP Signature | Build Log