Some good things, but needs refining

First of all, I love making bread. The ratio method, especially using weights and metric measurements using a digital scale, has certainly helped me perfect my recipes. So, the basic philosophy appears sound. I agree too with the author that adding ingredients by weight requires less cleanup since you simply "zero" the scales and just add until the scales display the correct quantity.
The calculator is about the only real value in having this app. Good for increasing any recipe.
i did not like the fact that updating my version 1 to 1.0.1 wiped out my saved recipes. Hopefully that does not happen again with future versions. Also, I cannot understand why the ratio graphs use different colours for ingredients from recipe to recipe. If you are using purple for fat, then be consistent–dont use it for sugar some times and fat another. Flour was represented in yellow for all but one recipe.
So, a few refinements to consider.

DNielsen about Ratio