Updated for iOS 27, with the latest version of the app's frameworks. Everything works as before.

Fixed fluid-ounce volumes. With fl oz selected, the amount you typed was treated as millilitres, so every quantity came out far too small. Volumes are now read in the unit shown, fl oz has its own quick-select sizes, and switching units keeps the same amount. New: saved recipes. Save a mix, find it under Saved Recipes, and tap it to load the developer, dilution and volume back into the calculator. New for tippers: Disco and ULTRA themes. ULTRA is a rainbow, spotlit, confetti-throwing mess — gloriously unhinged, and entirely optional. It switches itself off in red safelight mode and stays still if Reduce Motion is on. Red safelight mode now turns every screen red, including labels, headers and saved recipes, and hides the status bar. Light and Dark now apply as soon as you choose them, and Settings shows the correct app version.

New: red safelight display mode, so you can mix chemistry under a safelight without fogging paper. Fixed the Light and Dark theme setting, which now applies across the whole app instead of only the menus.