Reciprocity Plus

Reciprocity Plus

Long exposures without failure

6 ratings
8 reviews
$1.99

Details

  • Released
  • Updated
  • July 22, 2014
  • September 8, 2025
Reciprocity Plus screenshot #1 for iPhone
Reciprocity Plus screenshot #2 for iPhone
Reciprocity Plus screenshot #3 for iPhone
Reciprocity Plus screenshot #4 for iPhone
Reciprocity Plus screenshot #5 for iPhone
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About

This app simplifies long exposure photography calculations for both digital and analog cameras. It includes a vast library of filter effects and reciprocity charts, allowing users to design or modify their own. A built-in timer ensures accurate exposure timing even when the app is not in use.

Long exposure calculation
29 filter effects (CTO, CTB, ND, etc.)
110+ reciprocity charts
Customizable chart design
Built-in timer
Support for digital and analog photography
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What's New in Reciprocity Plus

1.26

September 8, 2025

We regularly update and enhance the application, for better and nicer pinhole shots. In this version: * code optimization * compatibility with iOS 15/16/17/18 + 26 * new film: Frankenstein 200 BW 4x5 119 films available! You don't find your favorite film ? Send us your request, we will fulfill it.

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User reviews

Good but…

It is absolutely great for its fundamental purpose, calculating reciprocity departure time. There is a list of many many film types, with provision to save a certain number of those his favorites. However, and here is the butt, there appears to be no way to remove a favorite from the favorite list. This is a real bummer.
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Response from developer

Tap on the heart icon to add a film as a favorite, tap again on that icon to remove from the favorite list (like the Music app).

Must have

In the Analog profession

Works, Works, Works!!

Only downside is I wish it added more film options. Like Cinestill 800T. There is no official data for it but through experimentation it can be added. Lomo400 follows the same guideline as Portra 400 but there is no portra 800 for example.

Works great

The app is really helpful to look up reciprocity failures on the go. The design is somewhat old-school but doesn‘t really hurt usability.

Uhhhh...

Nothing shows up on the reciprocity tab rendering this app useless for me even though I just paid for it... Using 13.1.2.

Response from developer

The latest version of Reciprocity Plus (1.11.2) features compatibility with the dark mode of iOS 13.

Developer apps

FAQ

What is Reciprocity Plus used for?

Reciprocity Plus is a photo tool designed to calculate long exposure times for digital and analog photography. It helps photographers manage exposure compensation due to filters and reciprocity failure.

Does Reciprocity Plus have ads?

No, Reciprocity Plus does not contain advertisements. It is a paid application designed to offer an uninterrupted user experience for photographers.

How many filters does Reciprocity Plus include?

Reciprocity Plus comes with 29 different filter effects, including CTO, CTB, Green series, and ND filters, to help users achieve specific lighting and color effects in their long exposures.

Can I create my own reciprocity charts in Reciprocity Plus?

Yes, you can design your own reciprocity charts or modify existing ones within Reciprocity Plus. The app includes 110 reciprocity charts and allows for customization.

What devices is Reciprocity Plus available on?

Reciprocity Plus is available for iPhone and iPod devices. It is designed to be compatible with iOS operating systems.

How often is Reciprocity Plus updated?

The latest version of Reciprocity Plus is 1.26, which was last updated on September 8, 2025. Updates typically include new features, bug fixes, and compatibility improvements.

What is the price of Reciprocity Plus?

Reciprocity Plus is a paid application priced at $1.99. This one-time purchase grants access to all its features and content.

What is the age rating for Reciprocity Plus?

Reciprocity Plus has an age rating of 4+, making it suitable for users of all ages. The content is generally considered safe and appropriate for a broad audience.