iPhone Screenshots


A simple and effective 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 enter their own times for reciprocity failure.

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 2.04

Bug fixes.

Ratings and Reviews

2.3 out of 5

6 Ratings

6 Ratings

Don't waste your time and money as I did


Film database is a joke, many missing important films like Fuji negative color films (Superia, Reala, etc). Publisher should list films so you know before paying for it if it's going to be helpful for you, and although the app is not free, there is no way to add films unless you pay an extra $9.99, a real rip-off.

Complete Waste of Money


You could easily just use a timer and find the reciprocity data on your film box insert. All other features require you to buy the “Pro-Version.” There’s no benefits to this silly app. The worst part is it crashes constantly.

Waist of time and money

Widow Queen

No use for an app that won’t stay open long enough to use can’t chose a filter without it crashing! If I could give it zero stars I would


Pump Interactive
21.8 MB
Photo & Video
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Portuguese, Spanish
Age Rating
Rated 4+
© Pump Interactive Pty Ltd
In-App Purchases
  1. Reciprocity Timer Pro $9.99


  • Family Sharing

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

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