# Reciprocity Timer vs Develop! Film Timer

The clearest difference is review sentiment: Develop! Film Timer at 89% against Reciprocity Timer's 32%. Develop! Film Timer also leads on price (Free vs $1.99) and rating (4.8 vs 2.5). Reciprocity Timer's advantage is iOS requirement (12.0 vs 17.0). On ads and device support there is nothing between them.

Develop! Film Timer is free to download; Reciprocity Timer costs $1.99 up front. Reciprocity Timer sells 1 one-off in-app purchase. Develop! Film Timer asks for nothing beyond the download.

Develop! Film Timer holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: Develop! Film Timer has 416 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 32% of Reciprocity Timer's written reviews are positive against 89% of Develop! Film Timer's.

Reciprocity Timer ships an update every 2 months, Develop! Film Timer every 4 weeks. Both last shipped on November 13, 2026.

## The numbers

| Metric | Reciprocity Timer | Develop! Film Timer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/reciprocity-timer/id459691262/reviews) | **[4.8 (416 ratings)](https://appshunter.io/ios/app/develop-film-timer/id568421864/reviews)** |
| Number of ratings | 4 | **416** |
| Positive reviews | 32.3% of reviews | **88.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 28 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pump Interactive](https://appshunter.io/developer/459691265) | [Todd Breslow](https://appshunter.io/developer/568421867) |

## What reviewers say

### Reciprocity Timer

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

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 |


### Develop! Film Timer

[App page](https://appshunter.io/ios/app/develop-film-timer/id568421864)

This app provides a flexible and intuitive timer for film and darkroom development. Create custom development recipes with multiple steps and intervals, and utilize a special darkroom mode for low-light conditions. Easily share your recipes and import them from FilmDev.org.

**Highlights:** Customizable development recipes, Multiple steps and intervals per recipe, Darkroom Mode (red-on-black theme), Integrated interval timer, Import recipes from FilmDev.org, Share recipes via social media

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Straightforward and useful
- 👍 Customizable timers and recipes
- 👍 Helpful voice prompts
- 👍 Simple and easy to use
- 👍 Excellent for film development

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔋 Cannot run in background
- 👎 Quiet chime/alarm volume
- 👎 Difficult to add/edit tasks
- 👎 No darkroom mode or red light option

**Reported bugs**

- Crashes on startup for some users
- Timer stops when switching apps or locking phone
- Issues with saving and editing recipes

**Requested features**

- Ability to pause and resume timers
- Option to clone/duplicate existing recipes
- Integration with development charts or databases
- More detailed task descriptions and notes
- Ability to skip optional steps


## Frequently asked questions

### Is Reciprocity Timer free?

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

### Is Develop! Film Timer free?

Develop! Film Timer is free to download, with no in-app purchases.

### Which has better reviews, Reciprocity Timer or Develop! Film Timer?

Develop! Film Timer is rated higher. Reciprocity Timer averages 2.5 out of 5 from 4 ratings, while Develop! Film Timer averages 4.8 from 416 ratings.

### Do Reciprocity Timer or Develop! Film Timer have ads?

Neither Reciprocity Timer nor Develop! Film Timer shows ads.

### Which is updated more often, Reciprocity Timer or Develop! Film Timer?

Reciprocity Timer ships an update every 2 months, and Develop! Film Timer every 4 weeks. Most recently, Reciprocity Timer was updated on November 13, 2026 and Develop! Film Timer on November 13, 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.*