RPN Calc vs StarLoc

A simple reverse polish notation calculator loosely based on my trusty HP-32SII that runs on iPhone, iPad, and Apple Watch! If you are familiar with HP RPN calculators, the operation of this calculator should seem very straightforward - albeit simplified. It can't be programmed, and it doesn't handle binary, or hexadecimal numbers. But, it has a clean, simple interface with large, easy to press buttons. It has all of the functions required for quick calculations when your iPhone is handier than your computer or calculator. And, remember those cool calculator watches from the 1980s? Unfortunately, none of them were RPN. RPN Calc brings a reverse polish notation watch calculator to the Apple Watch! In addition to the standard RPN Calculator app that runs on iPhone, iPad, and Apple Watch, RPN Calc includes a handy micro RPN Calc Today Extension available for convenient access to quick calculations from the pull down Today screen.

StarLoc is a clean, distraction-free GPS tool designed specifically for stargazing. Get accurate latitude, longitude, altitude, and time in formats ready for telescope alignment all in a night-friendly interface. Built for the Night Sky 
• Unlike standard GPS apps, StarLoc uses a dark theme with red and green text to help preserve your night vision during astronomy sessions. Accurate Location Data • Latitude & Longitude (DMS format) 
• Decimal coordinates for quick entry 
• Real-time GPS updates 
• High-accuracy positioning data 
 Time & Alignment Ready • Local time (12-hour & 24-hour) 
• UTC time and offset 
• Date display for precise telescope setup Altitude & Accuracy 
• Elevation in meters and feet 
• Horizontal and vertical accuracy readings Simple, focused and reliable. StarLoc provides the essential data you need to align your telescope and start observing. Perfect for backyard astronomers and dark-sky explorers alike.