RPN 28x Calc 3.5.4

tredje design – Commercial – iOS
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RPN 28x Calc is a programmable scientific calculator featuring a classic design, offering a modern and user-friendly experience where operands can be interacted with via the display's touch capabilities.

Being a reverse-polish notation (RPN) calculator, it showcases a dynamic stack display that conveniently expands as more values are added. Navigation through the display on an iPad is effortless - simply swipe for more lines or reorder levels and modify stack values as needed.

Advanced functionalities are accessible through a secondary panel on iPad or as alternative button pages on iPhone. The interface is thoughtfully organized into five pages for quick access:

<ul>
<li>user-defined buttons,</li>
<li>letters A-Z for typing,</li>
<li>trigonometric, logarithmic, and data manipulation commands,</li>
<li>statistics, storage and programming commands,</li>
<li>binary integers, system flags and boolean logic.</li>
</ul>

RPN 28x Calc distinguishes itself in various aspects:

<ul>
<li>Select and issue commands for a chosen level by tapping a row.</li>
<li>Rearrange the stack by dragging rows in REORD mode.</li>
<li>Scroll through levels by swiping the display up or down.</li>
<li>Efficiently reposition the cursor by tapping digit keys when entering values.</li>
<li>Modify status indicators at the top of the display with a tap.</li>
<li>Customize button layout by dragging buttons - configure this option in settings.</li>
</ul>

Exclusive to iPad:

<ul>
<li>The display automatically adjusts to show more than four stack levels.</li>
<li>Easily navigate button pages by sliding the secondary panel in or out of view.</li>
</ul>

Additional features include:

<ul>
<li>147 scientific units and elementary physical constants,</li>
<li>Commands for upper-tail probability distribution,</li>
<li>Interactive program debugging.</li>

RPN 28x Calc provides:

<ul>
<li>High-precision arithmetic calculations,</li>
<li>Support for multiple data types such as real numbers, complex numbers, binary integers, lists, arrays, vectors, matrices, programs, names, and strings,</li>
<li>Customizable variables creation with a variable viewer for inspection,</li>
<li>A rich command set for programming,</li>
<li>Button creation and reordering for personalized programs,</li>
<li>Browsing of scientific units and constants in the units viewer,</li>
<li>Access to command history and results in the log viewer,</li>
<li>Adjustable button click and alert volumes,</li>
<li>Landscape orientation support,</li>
<li>Haptic feedback on iPhone,</li>
<li>External keyboard compatibility,</li>
<li>Dark Appearance mode since iPadOS 13 or iOS 13,</li>
<li>An alternative dark app icon, </li></ul> </ul> </ul> </ul> </ul> </ul> </ul> </ul> </ul> </ul>The application ensures a smooth cross-device experience between iPad and iPhone. Use it conveniently across various iPad multitasking views, like Slide Over or Split View. RPN 28x Calc prides itself on being ad-free, respecting user privacy with no tracking or intrusive rating requests. Furthermore, a downloadable user guide detailing an introduction and command reference is available in PDF format.

Promised updates include support for arithmetic expressions in future releases, enhancing functionality and versatility even further.

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