A tool for photographers and videographers alike. Calculate which filter is needed to get shutter speeds at double frame rate (video), Calculate exposure time for long-exposure photos, track wind, weather, KP index, and countdown to golden-hour. We are continuously building this app out with new features to help you Capture Perfection.

What's New

Version 5.11

Bug Fixes

Ratings and Reviews

2.4 out of 5
26 Ratings
26 Ratings

App works!

Inside tip

If you fallow the instructions the shutter speed calculator does work, don’t listen to the people that haven’t done their homework. This great app has wind speed and gold an hour timer which is a plus. Would definitely recommend this being in your drone app arsenal.

Filter suggestions make no sense


First, they got rid of the drone/device selection, making it very difficult to understand and inaccurate.

Second, the instructions say to input the iso, which is clearly not an option on the calculator, making it even more confusing.

Third, if you’re shooting at a longer shutter speed (like 1/50) the image should be lighter right? And when you shoot at a shorter shutter speed (like 1/250) the image should be darker.
Then why does it suggest darker and darker nd filters with shorter shutter speeds?? It’s telling me that if I’m shooting at 24fps with 1/50 I don’t need a filter, but at 24fps with 1/250 I do. Aren’t nd filters supposed to compensate for a overexposed image when using long shutter speeds?
It should suggest darker Nd filters with longer shutter speeds. It does the opposite.

Developer Response

Hi Mondragueitor!
Thank you very much for the feedback, we greatly appreciate your help in making this a better app. We removed the device selection because it has nothing to do with the calculation, it was confusing many people. Second, you are absolutely correct, we need to remove ISO from our instructions, thank you for noticing that. Third, this app is to get shutter speed at double frame rate for video, it has nothing to do with making an image lighter or darker. If you have any questions our support team would be happy to help!



Using an iPhone X. App won’t load location and always crashes. Such a horrible app.

*Thanks for the response. Once it’s fixed and working properly I will update my review/rating. With the way the app is there’s no way to use it. The location doesn’t even calculate where I’m at and I’ve given the app permission for my location. Hopefully it gets fixed soon.

Developer Response

Hi Karipides,
Our Weather API servers have been inconsistent, they are being updated and everything should be running smoothly in a couple days here :) Thanks for the feedback


Polar Pro Filters Inc
45.8 MB
Photo & Video
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© PolarPro


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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