Spirale app icon
Spirale
Develop B&W film at home
Download on the App Store
$4.99 · One-time purchase

Pair a black & white film and developer, pick a fixer and start developing. Spirale guides your sessions with clear timers, agitation cues, and reusable chemistry tracking.

The data you need, organized around how development works — not around the database behind it.

Recipes

Your darkroom shelf

Spirale pairs each film and developer in one card, color-coded by packaging, so you spot them at a glance.

  • Reusable developers show batch usage and volume right on the card.
  • Long press on a recipe to rearrange or delete it.
Spirale recipes list
The Editor

All the data, none of the noise

Fine-tune your development variables: target ISO, developer dilution, temperature compensation and agitation style for your chemistry.

  • See the roll count, mixing date and expiry date for reusable chemistry.
  • Tap the volume to see the dilution.
  • Pick from official Ilford, Kodak and Agfa agitation styles.
  • Add or remove optional steps.
Spirale editor screen
The Timer

Agitate with precision, leave nothing to chance

  • Arcs around the clockface and dots on the progress bar mark each agitation cycle.
  • Sound, haptic, and text cues show what to do and when.
  • Tap the seconds hand or the dial to change the timer's appearance.
Spirale timer screen
The Process

Make it yours

Your own times, recorded as you develop — tracked, averaged, and refined. The longer you use Spirale, the more it reflects how you work.

Spirale process screen

The datasheet is where you start. Where you end up is yours.

Spirale app icon
Spirale
Download on the App Store
$4.99 · One-time purchase