Development times are taken from official manufacturer datasheets and trusted published sources. The app also links to the original datasheets where available.
Your pocket darkroom for black and white film
Timer, datasheets, and a journal for your rolls. Stay consistent,
experiment freely, and keep track of what worked.
Times for popular film brands
Experience the key benefits
Reliable development timers
Official datasheets included
Push and pull support
Development journal
Reuse your previous recipes
Built for darkroom focus
Rodinal
Kodak D 76
Ilford ID 11
Kodak HC 110
Ilford DD X
Adox Adonal
Kodak XTOL
Fomadon R09
CineStill DF96
Ilford Microphen
Diafine
Ilfotec HC
Tetenal Ultrafin
Fomadon Excel
Pyrocat HD
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FAQ
DevelopFilm adjusts times using standard push and pull multipliers, based on common darkroom practice and manufacturer guidance when available. You can always override the final time.
Temperature accuracy, agitation style, tank type, dilution, and water chemistry can all shift results. Treat times as a starting point, then log what worked for your setup.
Yes. You can save your own adjustments, notes, and results in the journal so you can repeat the look later.