Darkroom Companion: Dev Timer
B&W film developing times
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Now free. Timer, calculators and the time database at no cost.
Free film developing times and a multi-step darkroom timer for black-and-white film. Built-in development chart for common film and developer combinations, dilution calculator, reciprocity calculator and a red night mode. No subscription, no ads.
Whether you are developing your first roll or your thousandth, it keeps the whole process in one place.
FREE — NO SUBSCRIPTION, NO ADS
• Multi-step timer — developer, stop bath, fixer, wash, wetting agent — with sound and haptic agitation cues
• Night (red) mode that preserves your dark adaptation
• Development time calculator for bath temperature and push/pull (± stops)
• Built-in database of times for common film and developer combinations
• Dilution calculator — how much concentrate, how much water
• Celsius or Fahrenheit, whichever you think in
• Reciprocity calculator for long exposures
• One custom recipe and the last three developments in the log
DARKROOM PRO — one-time unlock, no subscription
• Unlimited custom recipes and custom process steps
• Chemistry log — tracks expiry and exhaustion, warns you before you pour dead fixer
• Unlimited development history
• Data export and import
Times are indicative. Verify them against the manufacturer datasheet before real use — the app reminds you as well.
PRIVACY
The app collects only anonymous usage statistics — which screens are opened and which features are used — so it can be improved. It does not send your recipes, log, notes or anything else you type into it, and it uses no advertising identifiers.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
No changes inside the app. This version only updates the store listing, so it is clear at a glance what the app does and that the timer and the time database are free.
The developer, Stanislav Grunfeld, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stanislav Grunfeld
- Size
- 30.7 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Darkroom Pro $2.99
- Copyright
- © 2026 Haffy