iPhone Screenshots


Manage your film photography from start to finish! One app does it all - notes, filters, exposure calculations, custom films, zone system editor, film holder management as well as reciprocity math!
A comprehensive film reciprocity calculator for photographers. Select a film type and metered exposure time - the calculator will provide a reciprocity compensated exposure time. The app includes an exposure timer so you can time your long exposures. You can also use a slider to adjust exposure when you have filters attached.
The app supports a wide range of film stocks and allows the user to add various common exposure filters such as NDs and Polarizers.
Keep detailed notes and share them. Share your adjusted exposure times with colleagues.
This app makes film photography a breeze.

The app includes in-app purchase to unlock pro features including a note-keeping feature, the ability to add custom films and the ability to select often used film stock as favorites.

You may need to setup Reciprocity Timer in Settings -> Notification Center to ensure the app's timer can notify you when exposures are ending and your device is asleep.

What’s New

Version 3.12

Loads of bug fixes and stability fixes.
Added ability to turn Film Holder numbers on and off.

Ratings and Reviews

2.7 out of 5
13 Ratings

13 Ratings

447980981475 ,

Buggy, but if you use a large-format camera you need this

The interface is slightly idiosyncratic and the app is buggy with recent iOS versions (Dropbox export blows up) but, if you make exposures longer than a second (and if you use a large-format camera then you do), then you need this.

One nice feature to add would be to allow auto-notes even for short exposures: that would let me record details of all my exposures almost automatically.

Bigdogdoug ,

Not up to date with Ilford film

Ilford updated their calculations for reciprocity. The result is much shorter times. This app makes for over-exposures.

mikeallen744 ,

Useful app

I’ve been using Reciprocity Timer for a few years now and it’s been very useful. There are a couple of modifications that would help; the ability to add more than one filter before returning to the main screen; I’d like to be able to ‘lock’ the selected film type, as I’ve inadvertently changed it a couple of times during a shoot without realizing.

App Privacy

The developer, Pump Interactive, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

You May Also Like