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DavoliApps
US Calculator
When you initially open the app, you'll notice right away that there is no longer 5 buttons on the bottom of the screen. There are only 4 because the American and Euro calculators have been combined into one view. The application is setup with the American version as the default calculator...
To get to the screens below, Open up iWatchr and select the "Calculator" tab, choose the "Formula" button in the upper right hand corner.
If you don't really care about how the formula works and just want to get it working like it used to then you can ignore the following information under the screenshot. Just make sure that when you select the formula button in the US Calculator, your screen matches the second screenshot below...(the one after the blue arrow). Just select on the row you need to edit and it will bring you to a screen where you can change the values. Hit the "done" button when you have finished to save the formula. You're done!! You never have to do this again!!
If you do want to learn how configuring the formula works because you plan on tweaking the formula a bit then continue reading and you should have no problems!
The formula the US calculator is based on is ((Calories / 50) + (Sat.Fat / 12) - (min{fiber,4} / 5)).
If you have the formula itself in front of you and you compare it to the screenshot then it's pretty self explanatory how it works. If you take basic Math rules, basically all equations can be broken up into sets of parenthesis to better show which mini equations are calculated first and whatnot, right?
Look at the formula I am using and look at the screenshot. The first line in the screenshot equates to the first set of parenthesis in the formula...(Calories / 50), the second line is the first "+", which is outside the parenthesis. The third line is the second set of parenthesis....(Sat.Fat / 12) and so on. If you look at the "(min{fiber,4} / 5)" part of the formula, it means that which ever number is smaller, 4 or the value of "fiber", will be divided by 5. So if you look at the screenshot, it is simplified into a switch. If you want that minimum restriction then leave the "max fiber" switch on but if you don't want a minimum restriction then turn that switch off and whatever number that is entered into the fiber field will be divided by 5, regardless of how high or low the value is.
In other words...if you leave the switch on, the formula will calculate like it always has...
((Calories / 50) + (Sat.Fat / 12) - (min{fiber,4} / 5)). If you turn the switch off, it will calculate like this...
((Calories / 50) + (Sat.Fat / 12) - (Fiber / 5)).
If you just used the formula used in the screenshot and didn't tweak it at all, then you can test it out if you'd like to see that it is working correctly like it always has....HERE
If you have any questions at all on how to do this, please don't hesitate to email me at [email protected]