The Voyager calculator platform, a revered and cherished tool for many a STEM graybeard, has been reincarnated by HP via an official application on the Android platform with the recent release of the "HP 15c Scientific Calulator." The asking price, while high compared to most mobile applications, is in line with the better HP-11/15/16 and (cough) 12c emulators in the Play store, and one-tenth the asking price of used specimens on the open market. During and since their reign, many owners would attest that these units were among the best designed devices of all time. Long live the King!
For $16.99?! That's more than one of their printer cartridges!
And it will never run out.
Why are there so many calculator apps? They all do the same.. asside of the various bugs they have.