# Reciprocity Timer vs Darkroom Lab Timer

The clearest difference is review sentiment: Darkroom Lab Timer at 70% against Reciprocity Timer's 33%. Darkroom Lab Timer also leads on rating (3.0 vs 2.5) and in-app purchases (none vs 1). Reciprocity Timer's advantage is price ($1.99 vs $8.99) and update cadence (every 2 months vs every 11 months). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Reciprocity Timer costs $1.99 and Darkroom Lab Timer $8.99 up front. Reciprocity Timer sells 1 one-off in-app purchase. Darkroom Lab Timer asks for nothing beyond the download.

Darkroom Lab Timer holds the better App Store score, 3.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 33% of Reciprocity Timer's written reviews are positive against 70% of Darkroom Lab Timer's.

Reciprocity Timer ships an update every 2 months, Darkroom Lab Timer every 11 months. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Reciprocity Timer | Darkroom Lab Timer |
| --- | --- | --- |
| Price | **$1.99** | $8.99 |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/reciprocity-timer/id459691262/reviews) | **[3.0 (4 ratings)](https://appshunter.io/ios/app/darkroom-lab-timer/id1020149692/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 33.3% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#94** | — |
| Size | 28 MB | 3 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pump Interactive](https://appshunter.io/developer/459691265) | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) |

## What reviewers say

### Reciprocity Timer

[App page](https://appshunter.io/ios/app/reciprocity-timer/id459691262)

**Currently charting:** #94 Top Paid · Photo & Video (US App Store)

This app helps film photographers calculate exposure compensation for reciprocity failure. It offers a standard version for basic calculations and a pro version with advanced features like note-taking and custom film databases. It also includes an exposure timer and filter compensation tools.

**Highlights:** Reciprocity compensation calculations, Exposure timer, Filter compensation slider, Note-keeping feature, Custom film and camera databases, Film stock favorites

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reciprocity Timer Pro | $9.99 | one-time |


### Darkroom Lab Timer

[App page](https://appshunter.io/ios/app/darkroom-lab-timer/id1020149692)

This advanced timer app is designed for photographic processes like C-41, E-6, and B&W. It offers customizable steps, separate agitation sequences, and helpful tools like a volume mixer and safelight simulation.

**Highlights:** Customizable steps, Separate agitation sequences, Process templates, Volume and dilution mixer, Safelight simulation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Reciprocity Timer free?

Reciprocity Timer costs $1.99, and also offers in-app purchases.

### Is Darkroom Lab Timer free?

Darkroom Lab Timer costs $8.99, with no in-app purchases.

### Which has better reviews, Reciprocity Timer or Darkroom Lab Timer?

Darkroom Lab Timer is rated higher. Reciprocity Timer averages 2.5 out of 5 from 4 ratings, while Darkroom Lab Timer averages 3.0 from 4 ratings.

### Do Reciprocity Timer or Darkroom Lab Timer have ads?

Neither Reciprocity Timer nor Darkroom Lab Timer shows ads.

### Which is updated more often, Reciprocity Timer or Darkroom Lab Timer?

Reciprocity Timer ships an update every 2 months, and Darkroom Lab Timer every 11 months. Most recently, Reciprocity Timer was updated on September 25, 2026 and Darkroom Lab Timer on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*