The latest version of PCalc for iOS is 3.7.6 which was released on the 22nd of May 2018.
Version 3.7.6 requires iOS 8 or later. The Apple Watch app requires watchOS 2 or later.
For more information about PCalc, visit The Official PCalc Home Page.
The latest version of DragThing is 5.9.17 which was released on the 16th of November 2016.
DragThing 5 includes English, Japanese, German, French, Italian, Dutch, Danish, Simplified Chinese and Traditional Chinese language support as standard.
Version 5.9.17 requires OS X 10.7.4 or later.
Version 4.6.1 requires OS X 10.1.5 or later, or Mac OS 9 with CarbonLib 1.6.
Version 2.9 requires Mac OS 7.5.5 or later, but does not work on OS X.
For more information about DragThing, visit The Official DragThing Home Page.