FutureCalc: ergonomic calculator for single-handed use 1.2

FutureCalc presents itself as an ergonomic calculator optimized for single-handed operation, potentially addressing a gap in existing mobile calculator designs. Its design ensures that all buttons are accessible to the thumb without necessitating repositioning of the device or support from the other hand.

The application offers two distinct layouts, termed Radial and Concave, each of which can be flipped for either right- or left-handed use, providing versatile ergonomic options.

Key features include:

• Real-time calculation display, eliminating the need for an explicit equals button; results update dynamically as inputs are entered.
• A core set of arithmetic functions—addition, subtraction, multiplication, and division—implemented with 64-bit floating-point precision.
• Easy toggling of keypad orientation to accommodate left- or right-handed users via a dedicated flip button.
• Design customization through a settings menu accessed at the bottom of the interface.
• A singular CLEAR button that performs two functions: a tap deletes the last digit; a press-and-hold resets the calculator entirely.
• Copy and paste functionality integrated into the interface; tapping on displayed numeric values enables copying, while editable fields support paste operations.
• Input length is limited to 16 digits in this version, balancing usability with data constraints.
• Compatibility extends to all iPhone models from the 4S onward, with interface adjustments ensuring consistent button sizes across devices such as the iPhone 6 and 6S.

This tool demonstrates a thoughtful approach to ergonomic mobile calculator design, prioritizing usability and flexibility in single-handed operation.