3 ms·
for Windows: OpalCalc more than nostalgic website but actively maintained: https://www.skytopia.com/software/opalcalc/ https://www.skytopia.com/software/opalca
by anotheryou 7y ago
for Windows: OpalCalc
more than nostalgic website but actively maintained: https://www.skytopia.com/software/opalcalc/ https://www.skytopia.com/software/opalcalc/
calcing with time is a bit jumpy at times, but other than that I love it for quick napkin calcing stuff
costs 15 bucks