Helios Pro 4+

Chemical Wedding

    • 3.5 • 21 Ratings
    • $17.99



We're very excited to finally reveal Helios Pro for cinematographers and photographers. Not only can you pinpont the position of the sun, the moon (and now) stars the way you can in Helios, we've also added Augmented Reality and light simulation magic into the alchemal mix. Now you can visualize exactly what shots will look like at any location, at any time of the year or day. You can see precicely how light will illuminate and the shadows will fall.


For landscapes we create a dynamic 3d mesh of the surrounding terrain and show how the light will change throughout the day across the hills, mountains and valleys.

For city photographers we download OpenStreetMap building data and render a 3d reconstruction of the buildings and streets. You can therefore see exactly how the light will strike the buildings throught the day.


New to Helios Pro are a number of tools to help with night photography. The new milky way section gives you three different ways of visualizing the stars at any location. It also includes a unique night-shoot planner designed to let night photographers plan Milky Way photography.

- Multiple tools to explore sun, moon, and star data.
- Light simulation on a range of virtual stand-ins.
- Scarily accurate alchemy and celestial mechanics.
- Night-shoot planner to see the optimum dates and times to shoot the Milky Way.
- Dynamically generated 3D models of landscapes, buildings, cars, trees (and of course, a dinosaur).
- Many tools will still work without reception.
- Multiple ways to export data.
- iPad and iPhone compatible

What’s New

Version 3.2

Bug fixes.

Ratings and Reviews

3.5 out of 5
21 Ratings

21 Ratings

Mtfield ,

Great App - Poor compass accuracy

Spoke with developers and understand the hardware limitations associated with this issue. I appreciate they seem to be doing all they can with every hardware release. Hopefully they keep pushing it forward. I’ve also done further comparisons and have realized sunseeker uses a few tricks to disguise their inaccuracies as well so the difference isn’t quite as severely as originally suspected. However I still continue to find sunseeker to be more accurate without user calibration.

Big fan of the app and UI, but my main use for this app is live view and the app falls down there compared to its main rival “Sun seeker.” If I line up the sun and calibrate that way, I tend to get solid results but if I select use the compass I find the results to be significantly off. I’ve tested this in many environments over two phones (currently 11 Pro) and come away with consistently poor results. I find Sun seekers results to be much more reliable. I’m not sure how they calibrate vs the compass calibration Helios uses, but whatever they are doing I wish Helios would adapt. I’d much prefer to use this app only. Will keep testing, would love to hear the developers thoughts- no way they haven’t tested vs sun seeker internally...

Developer Response ,


Sorry to read of your Helios headache. Please send an email to toby@chemicalwedding.tv and we will try to address your problem.

Kind regards

6milliondollardude ,

Excellent except for the clunky saving of pictures.

I’ve just started using this and after two days of experimenting I find that the saving the photos option is too slow. It’s a three step process for some reason and when you’re out in the bright light it’s not easy to see all the buttons.

That aside the 3 D model in Live view is excellent. If you’re shooting a car commercial this is a must. It’s as accurate as sun seeker which is pretty accurate when using the compass, but not perfect. If you have the sun already out you can calibrate from that and then it is an excellent tool.

I just hope they figure out the saving of the photos part, it’s the only thing I’m not crazy about with Artemis view finder too.

It’s the only reason I didn’t give it five stars.

Clint Arthemis Golub ,

Outstanding ability to set up aerial shots

The ability to fly a virtual drone with full controls over rendered topography, or 3D building mode during all points of the sun’s path, anytime of the year is indispensable for saving time setting up shots. The light pollution map is also very handy. However, the app is buggy and as of 3/1/19, the “virtual stars” mode is broken and will cause the app to crash on my iPhone X. The app can also crash if I take the virtual drone over mountainous ranges, and then over an urban environment very quickly while planning the camera up or down as the app seems to many times ‘struggle’ to keep loading the GPS tiles. Definitely hope the devs update these frustrating bugs and make it more capable as soon as possible, but if you’re in the market for a power photography app, don’t let these drawbacks dissuade you. Helios Pro has become one of my main go-to apps, even if I’m just shooting off my iPhone.

Developer Response ,


Many thanks for your note. We think we have IDed the virtual drone/ mountainous ranges ranges bug but would like to chat about about the virtual stars mode, etc. Might you have time to talk? Please email me at simon.reeves@me.com at your convenience.

Kind regards


App Privacy

The developer, Chemical Wedding, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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