# Reciprocity Timer vs Develop!

The clearest difference is review sentiment: Develop! at 89% against Reciprocity Timer's 33%. Develop! also leads on price (Free vs $1.99) and rating (4.8 vs 2.5). Reciprocity Timer's advantage is chart position (#194 vs unranked). On ads, device support and iOS requirement there is nothing between them.

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

Develop! holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: Develop! has 374 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Reciprocity Timer's written reviews are positive against 89% of Develop!'s.

Reciprocity Timer ships an update every 2 months, Develop! every 4 weeks. Both last shipped on September 30, 2026.

## The numbers

| Metric | Reciprocity Timer | Develop! |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/reciprocity-timer/id459691262/reviews) | **[4.8 (374 ratings)](https://appshunter.io/ios/app/develop/id568421864/reviews)** |
| Number of ratings | 4 | **374** |
| Positive reviews | 33.3% 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** |
| Best chart rank | **#194** | — |
| Size | 28 MB | 101 MB |
| Requires iOS | 12.0 | **11.0** |
| 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)

**Currently charting:** #194 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 |


### Develop!

[App page](https://appshunter.io/ios/app/develop/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! free?

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

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

Develop! is rated higher. Reciprocity Timer averages 2.5 out of 5 from 4 ratings, while Develop! averages 4.8 from 374 ratings.

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

Neither Reciprocity Timer nor Develop! shows ads.

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

Reciprocity Timer ships an update every 2 months, and Develop! every 4 weeks. Most recently, Reciprocity Timer was updated on September 30, 2026 and Develop! on September 30, 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.*