B%C supports % formula including multiple preferments (yeasted or sourdough based). You can save, edit and scale any formula for your favorites dough. The App let you scale your dough by weight or total flour you want to mix.
Build your overall % formula: setup flours, ingredient and the % values.
Optionaly add one or more preferments / sourdoughs. Just choose the % of overall prefermented flour and the flours/ingredients.
Scale your dough by Total flour/dough and calculate!
Edit / Save / Calculate baking % formula.
Save you formulas in the 'Recipes Book'.
Save your 'Favorites Dough' scaled down and ready to be used.
Backup / Restore the 'Recipes Book' from / to file.