Jim Chapple is now working full time on iphone/ipod touch and iPad applications.
Jim Chapple also works on Mac OS X Apps.
Please email Jim Chapple for support issues, information and quotes.
The small thumbnail images below will show larger iPad screenshots.
The following screenshots are from the iPhone. If you have the iPad version then the main difference is that the explanations are shown on the same page as the calculations.
FAQ: This App does not work properly it keeps on crashing, why?
Sometimes Apps just do not download properly. You will need to download it again, for free, using itunes. See Apple Support Pages
About half way down the page there's a set of instructions that starts 'Reinstall the affected application'. Once iTunes has it then you sync your device and it should then work. If it does not then please to contact me.
Fraction to Decimal
This view is seen by selecting 'Fraction to Decimal' at the top of the page.
You enter the fraction you want converting by selecting the three fields before the equals sign. The keypad is shown when the fields are selected. The field being changed is highlighted in yellow. You can select each field while the keypad is showing and enter the values for each. Select OK when you are done.
The decimal equivalent is shown. Generally, when the number ends in '...' it means that the decimal number is recurring. You can easily tell if it is because the numbers start repeating some point after the decimal point. In this case the numbers after the decimal point start .040505' and so on. It is the '05' part that is recurring.
Not all numbers recur (PI is one such never ending decimal) so if you cannot see a pattern then assume the number is not recurring.
Decimal to Fraction - recurring
This view is seen by selecting 'Decimal to Fraction' at the top of the page.
Select the field before the equals sign and use the keypad to enter the decimal number. Select OK when you have entered all the digits you want.
You also have to indicate whether the number is recurring. In this case it is so 'Yes' has been selected. You also have to enter how many digits recur. This number is counted from the last digit specified. In this case twelve digits have been specified after the decimal point but the first six are the same as the last six so the number is recurring and it is the last 6 digits that do so.
Because the first six match the last six the decimal can actually be reduced to 0.142857 and all six digits after the decimal point recur. The fraction is worked out using the simplified decimal and turns out to be one seventh.
Other examples are: a) 0.04050505 recurring. You can type .0405 and specify that the last 2 digits recur, b) 0.333333 recurring. You can type 0.3 and specify 1 digit recurring.
The Workings Page
The Workings page is a step by step guide that explains how the answer was arrived at.
Sometimes the explanation is very simple so only a few lines are shown. Sometimes the explanation can get quite long.
This generally occurs where a Decimal to Fraction calculation has been done and the decimal number recurs with the numbers starting to recur some time after the decimal point.
Decimal to Fraction - not recurring
Decimal numbers do not have to recur. If the decimal number does not recur then just select 'No' and the calculation will be done ignoring any recurring digits.
This form of conversion is much easier than when the number recurs. The App simplifies the fractional answer as much as possible.