I've had this Texas Instruments scientific calculator since 6th grade, it's now getting me through finals in my first semester of college. : r/BuyItForLife
Microsoft Apps
VE Calculator - Apps on Google Play
VE CALCULATOR by eric kelner
CGTK - ARPCalc - Al's Reverse Polish Calculator
FREE Calculator Management and Sign-Up Sheet Back to School Organization
iPad Calculator - I've added features you requested and fixed bugs : r/shortcuts