# Support

iPhone and Mac App

The MS button selects between 2 memory locations that can be used to store values.

The percentage key works as per most calculators.

When adding or subtracting the percentage key adds or subtracts that percentage of the preceding number: 72 + 5% = 75.6 (5% of 72 is 3.6).

When multiplying or dividing the percentage key simply divides by 100: 72 x 10% = 7.2 (72 x 10/100 is 7.2).

Rounding. The calculator employs the “round away from 0” scheme to fit values onto the display or to show the decimal digits preferred, eg. 0.5 ↑ 1, -0.5 ↓ -1.

Accuracy. Nixie Calculator is intended to be a fun basic calculator and not a highly accurate and precise machine. Nevertheless the calculator employs the precision available using Apples inbuilt decimal functions (NSDecimalNumber). The calculator will show a drop in precision for some maths calculations (that use 64 bit – Double precision only) by fading out some of the Nixie display. Like all calculators however errors can accumulate with repeated calculations due to the limitations of representing numbers in digital systems.

Watch App

The watch app uses gestures for +, -, x, / and =. Simply draw these with your finger.

If you wish to see the swipe tutorial again, do a force touch (hard press) on the calculator.

Support Contact:

If you have questions or suggestions please email: unbsystemsptyltd@gmail.com