Spark Calculator app for iPhone and iPad

Calculate any PEMDAS+ expression using Spark Calculator!

The following functions are supported:

-----------------------------------
name symbol usage
----------------------------------- (Left Side Functions)
Absolute Value ~ ~a
Summation ∑ ∑i
Square Root √ √a
Inverse 1/ 1/a
Negation - -a
----------------------------------- (Middle Functions)
Exponentiation ^ a ^ b
Root *√ a *√ b
Multiplication x a x b
Division ÷ a ÷ b
Modulo % a % b
Addition + a + b
Subtraction – a – b
----------------------------------- (Right Side Functions)
Factorial ! i!
Square ^2 a^2
-----------------------------------

*Note: "a" and "b" represent any arithmetic expression, and "i" any integer number*
**Important: Some functions listed above dont have a key for it on the calculator. *√ is autofilled when typing √ between any two numbers y and x, while - (negative) is just – (subtract) typed in front of a number x.**

-- Features --

- Arithmetic Expression input validation and filtering prevents invalid user input
- MEM and ANS capability, set using "SET" and "=" buttons, respectively
- "SET" by long pressing "="
- Clear arithmetic expressions by long pressing DEL
- Reveal extra functions while in compact layout using ALT
- Landscape mode on iOS and iPad reveals full button layout
- 3:4 and greater aspect ratio windows on MacOS reveals full button layout

-- Compatibility --

- Maximum 64 bits of floating point precision
- iOS/MacOS Support

-- Roadmap --

- Improve button layout and add more long-press interactions
- Improve answer display by including "," to separate every power of 10^3, i.e. 100,000
- Add keyboard support on MacOS
- Increase floating point precision
- Add trigonometric and logarithmic functions
- Add custom, programmable function capability