# Film Reciprocity

> Film stock and exposure calculator for photographers. (iPhone/iPad app by Guillaume Moigneu.)

- Source: https://appshunter.io/ios/app/film-reciprocity/id1605389719 (this page in markdown: same URL + `.md`)
- Developer: [Guillaume Moigneu](https://appshunter.io/developer/1605267431)
- Category: Photo & Video
- Price: Free
- Rating: 3.67/5 from 6 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.2 · 0 MB
- Languages: English
- Released: 2022-01-15
- Data updated: 2026-06-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/film-reciprocity/id1605389719/reviews.md

## What is Film Reciprocity?

Select your film stock, input your measured exposure, and voila! The corrected exposure will be calculated!

The application is published under an open-source GPLv3 License.

## Key features

- Film stock selection
- Measured exposure input
- Corrected exposure calculation
- Open-source GPLv3 License

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/film-reciprocity/id1605389719/reviews.md

### 1/5 — wrong calculations

*2023-01-28, version 1.2*

portra 400 is wrong. Its based off the correct chart, but the math is really incorrect. I would be wary of trying to use anything else on this app if the calculations off a basic chart are this off. Theres another app that has the correct calculations, but not this one!

### 5/5 — works!

*2022-04-05, version 1.0*

Does exactly what it says it does. Very easy to use.

## Frequently asked questions about Film Reciprocity

### What is Film Reciprocity?

Film Reciprocity is a free application designed to help photographers calculate corrected exposure settings. You select your film stock and input your measured exposure to get the corrected value.

### Is Film Reciprocity free to use?

Yes, Film Reciprocity is completely free to download and use. It does not offer in-app purchases or subscriptions.

### Does Film Reciprocity have ads?

No, Film Reciprocity does not contain advertisements. It is a free application without any ad support.

### What devices is Film Reciprocity available on?

Film Reciprocity is currently available for iPhone and iPod devices.

### How often is Film Reciprocity updated?

The latest version, 1.4, was released on May 13, 2023. The app was initially released on January 15, 2022.

### What is the age rating for Film Reciprocity?

Film Reciprocity has an age rating of 4+, making it suitable for a wide range of users.

### What license is Film Reciprocity published under?

Film Reciprocity is published under an open-source GPLv3 License, allowing for community contributions and transparency.

### What is the user rating for Film Reciprocity?

Film Reciprocity has a rating of 3.7 stars based on 6 user ratings.

## Version history (last 5 releases)

### 1.4 — 2023-05-13

Changelog:
- Adding CineStill 400D & CatLABS X FILM 80. Thank you Kris Payne!
- Adding Kodak Technical Pan

### 1.3 — 2023-05-13

Changelog:
- Changing Velvia 50 formula

### 1.2 — 2022-04-10

Adding ISO values on home and selection views

### 1.1 — 2022-04-10

This 1.1 version now includes a Search field in the film stocks view selection view.

### 1.0 — 2022-01-15

No release notes.

## Apps similar to Film Reciprocity

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pocket Light Meter](https://appshunter.io/ios/app/pocket-light-meter/id381698089) | 4.5 (1,043) | $9.99 | Photo & Video |
| [myLightMeter PRO](https://appshunter.io/ios/app/mylightmeter-pro/id583922375) | 4.8 (1,035) | $3.99 | Photo & Video |
| [Lightme - Logbook](https://appshunter.io/ios/app/lightme-logbook/id1544518308) | 4.9 (88) | Free | Photo & Video |
| [Long Exposure Calculator](https://appshunter.io/ios/app/long-exposure-calculator/id694553269) | 4.4 (62) | Free | Photo & Video |
| [Reciprocity Plus](https://appshunter.io/ios/app/reciprocity-plus/id898649178) | 4.3 (6) | $1.99 | Photo & Video |
| [SetMyCamera](https://appshunter.io/ios/app/setmycamera/id670363905) | 4.4 (138) | Free | Photo & Video |

## More apps by Guillaume Moigneu

- [Fever Log - Track Fever & Meds](https://appshunter.io/ios/app/fever-log-track-fever-and-meds/id6738873166)
- [Instags for Instagram](https://appshunter.io/ios/app/instags-for-instagram/id6755092490)
- [Dear Valentine](https://appshunter.io/ios/app/dear-valentine/id6755169206)
- [Sting9 - Anti-smishing](https://appshunter.io/ios/app/sting9-anti-smishing/id6755406186)

All apps by Guillaume Moigneu: https://appshunter.io/developer/1605267431

## Related topics

[guillaume moigneu](https://appshunter.io/ios/topics/guillaume-moigneu)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-03.*