PaperDeveloper
Darkroom paper developer timer
Free · Designed for iPad. Not verified for macOS.
A precise wet-process timer.
PaperDeveloper is a precise darkroom timer for the full wet process of photographic paper.
Set your paper, chemistry, dilution, temperature and volumes. The app calculates times from manufacturer data. The built-in timer guides you through every step — developer, stop bath, fixer, wash, and optional toning.
Track multiple papers and test strips at once, and save quick presets.
KEY FEATURES
• Timing for the full B&W paper wet process
• Papers, chemistry, dilutions and temperatures
• Multiple runs at once (paper + test strip)
• Presets for quick setup
• Chemical capacity / yield tracking
• Red UI for darkroom use
• Works offline — no account, no cloud
This version includes materials from FOMA, Ilford and Kentmere.
Important: the red interface helps in the darkroom, but PaperDeveloper is not a certified safelight. Please keep that in mind.
Enlarge — don’t scan!
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
PaperDev 2.0
• Added HARMAN, Ilford and Kentmere materials
• Updated toning logic
• Metric and imperial units
• Darkroom brightness can stay on after leaving the app
• Stability fixes for Setup and finished runs
The developer, Jan Kalina, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jan Kalina
- Size
- 3.6 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 16 more
- English, Czech, Danish, Finnish, French, German, Greek, Italian, Japanese, Norwegian Bokmål, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Ukrainian
- Age Rating
4+
- 4+
- Copyright
- © 2026 Jan Kalina