
PaperDeveloper
Darkroom paper developer timer
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Free
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About
PaperDeveloper is a precise darkroom timer for the full wet process of photographic paper.
Set your paper, chemistry, dilution, temperature and volumes. The app sets accurate times based on 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
Currently the app includes manufacturer materials from FOMA. In a future version we will add materials from manufacturers such as Ilford and ADOX.
Important: the red interface helps in the darkroom, but PaperDeveloper is not a certified safelight. Please keep that in mind.
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What's New in PaperDeveloper
1.0
August 4, 2026





