---
title: "Reciprocity Timer — App Overview"
url: https://marlvel.ai/apps/pumpinteractive-reciprocitycalculator
category: Photo & Video
developer: Pump Interactive
platforms: ios
rating: 3.0 (3 ratings)
pricing: freemium
report_level: overview
generated: 2026-04-27
last_verified: "2026-04-27T09:49:23.798Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app provides essential reciprocity calculations, users report significant friction regarding the visibility of the pro-upgrade path and accessibility issues with text sizing.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Photo & Video |
| Rating | 3.0 ★ (3) |
| Pricing | freemium |
| Platforms | iOS |
| Latest Version (iOS) | 3.99 |
| Developer | Pump Interactive |

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

Reciprocity Timer is a utility for film photographers designed to calculate exposure adjustments for common film stocks. The app offers a standard version for basic reciprocity calculations, with an optional in-app purchase to unlock advanced tools like a camera database and note-keeping.

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

- **Reciprocity Calculation**: Calculates adjusted exposure times for a range of common film stocks based on observed exposure.
- **Pro Feature Set**: Unlocks advanced functionality including a camera database and note-keeping capabilities via a one-time in-app purchase.
- **Custom Shutter Speeds**: Allows users to input specific shutter speeds to account for individual lens performance variations.

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

Film photographers ranging from beginners needing basic exposure assistance to advanced users requiring custom camera settings.

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

- [App Store](https://apps.apple.com/us/app/reciprocity-timer/id459691262?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/pumpinteractive-reciprocitycalculator)

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