Paper Exposer is Light & Filter & Timer in one App.
Together with your film camera you get a fully working enlarger for printing.

Maybe the most appealing step in the analog process is printing pictures on photographic paper in the darkroom. And this just now became easier and more accessible.

Paper Exposer will help you develop black & white prints with your mobile device and turn your film camera into an enlarger within just three simple steps.

Set. Focus. Expose.

Set exposure times and filters for full control over brightness and contrast of your print.

Use multiple exposures for test strips.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

708photog ,

Incredible! Great for split-grade printing.

I purchased this app after viewing the developer’s videos. I do already use a 4x5 enlarger, but this app looked like a quick and easy way to try split-grade printing with green/blue (additive) light on multi-contrast papers. I installed the app on my iPhone 8 (which, I found, fits nicely on top of the below-lens filter holder of my enlarger) and immediately set about making some 4x5 contact prints. The results are simply amazing. The app allows you to precisely dial in the color and intensity of two different “lights,” which the phone (or iPad) emits to the paper. Darkroom mode, touchscreen trigger, and exposure delay settings make the app customizable to your workflow. I used the app to make four different split-grade 4x5 contact prints and the results are as good, if not better, than prints I made using Ilford contrast filters. The best part: you don’t need an enlarger to make contact prints or enlargements using this app. Watch the developer’s videos for demonstrations and more info.


Jakub Kotrc
8.8 MB

Requires iOS 12.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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