Exposure Calculator is an iOS application for photographers to convert and calculate different exposure settings.

Longtime Exposures:
Exposure Calculator helps you to find the correct settings for your longtime exposures.
If your camera doesn't have a timer for longtime exposures, just use Exposure Calculator's built-in timer.

Shutter, Aperture, ISO:
No matter which parameters you want to use: Exposure Calculator calculates the remaining target value for you.

ND Filters:
Exposure Calculator helps you to find the correct settings when using ND filters.

Built in timer for calculated exposure times greater than 2 seconds.

Push Notifications:
For very long exposure times, ExpoCalc can remind you with a push notification that the timer approaches the end.

You can configure Exposure Calculator to meet the capabilities of your camera. Choose which ND filters you own and let Exposure Calculator display only those to keep the list clear. Choose between multiple color themes, dark and light mode.

What's New

Version 2.7

Fixed a calculation bug where the shutter speed was zero

Ratings and Reviews

3 out of 5

6 Ratings

6 Ratings

Perfect for what I was looking for


This app is perfect for large format cameras. Take a reading using a light meter, or even a digital camera. See what the exposure is that you get, input it into the app and then adjust your aperture to get the new shutter speed you’ll be shooting at. Easy and very customizable.

Excellent for calculating ND filters exposures


Comprehensive app for calculating exposure times, especially when wanting to dial in different variables such as neutral density filters vs. shutter speed vs. ISO vs. aperture.
Thanks to the developer!

Limited use


First of all it doesn't calculate exposures longer thank 30 seconds, secondly the interface is horrid. Thanks there are free calculators out there that are better so check them out before buying this

Developer Response

Please contact me, you probably have some problems in using this app. It surely computes expose times greater 30 seconds, in fact this is what this app is for.


Mario Zimmermann
9.1 MB
Photo & Video
Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 4+
© 2018 Mario Zimmermann


  • Family Sharing

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

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