I'm not so much interested in the formulas in the database as being able to add my own and then use the calculator to recalculate the formulas for different volumes of solution. To put in your own citric acid stop, for instance, you could pick any stop, change all the ingredients and amounts and the title, and save it to your favorites, and it will be added without changing the formula already there. That's how the MassiveDev app works as well--you can change everything in the processing sequence for a certain film/dev combination and update the title, save it in your favorites, and then use that without losing the info in the database.