---
title: "Reciprocity Plus — App Overview"
url: https://marlvel.ai/apps/com-leborddelapiscine-reciprocity
category: Photo & Video
developer: Le bord de la piscine
platforms: ios
rating: 4.1 (7 ratings)
pricing: paid
report_level: overview
generated: 2026-04-27
last_verified: "2026-04-27T09:48:22.402Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app offers a robust database for film reciprocity, user feedback highlights a need for more frequent updates to include modern film stocks and improved stability.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Photo & Video |
| Rating | 4.1 ★ (7) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 1.26 |
| Developer | Le bord de la piscine |

<!-- SECTION: Summary -->
## What is Reciprocity Plus?

Reciprocity Plus is a specialized photography utility designed to calculate long exposure times and reciprocity failure for both digital and analog film shooters. It streamlines complex exposure math by integrating 110 pre-loaded film charts and a library of 29 filter types, including ND, CTO, and CTB series.

<!-- SECTION: Key Features -->
## Key Features

- **Reciprocity Calculation**: Automates the calculation of exposure time adjustments required for reciprocity failure across 119 different film types.
- **Filter Library**: Includes data for 29 filter types, such as ND, CTO, CTB, and Green series, to assist in precise exposure compensation.
- **Customizable Charts**: Allows users to design their own reciprocity charts or modify existing ones to suit specific film stocks.
- **Background Timer**: Features a persistent timer that continues to run even if the user exits the application.
- **Data Sharing**: Supports exporting and sharing custom charts via email or integration with the Pinhole Assist app.

<!-- SECTION: Target Audience -->
## Who is it for?

Analog and digital photographers, particularly those working with large format or long-exposure techniques.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/reciprocity-plus/id898649178?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/com-leborddelapiscine-reciprocity)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-leborddelapiscine-reciprocity).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*