If you have any problems or questions about using PCalc, check out the list of frequently asked questions below and, if the answer isn't there, mail me at:
and I'll do my best to help. You should also check out the Forums.
Feature requests are welcome, especially from registered users, but do let me know what you think anyway. I do get a lot of email so it may take me a while to respond, but I do read everything in the end!
Okay, so the list here isn't exactly comprehensive! If you have a question, please let me know at the address above.
Q. I bought PCalc from Kagi ages ago, and I have a serial number - can I just download it from the Mac App Store now?
A. No, there is unfortunately no way for Apple to know that you are an existing owner of PCalc, so you will be charged twice if you do so. If you bought PCalc through Kagi, you have to download updates from here.
Q. I bought PCalc for through the Mac App Store - when I run the latest PCalc, it asks for a serial number, where do I find it?
A. It sounds like you have downloaded a version of PCalc intended for people who originally bought it through Kagi - the version from the Mac App Store doesn't require a serial number. You can redownload a new copy from the Mac App Store here.
Q. How can I tell apart a version of PCalc bought from the Mac App Store, and one bought from Kagi?
A. If you look in the "About PCalc" window in the app, it will say "Mac App Store" at the bottom of the window if it was purchased from Apple. Conversely, if it asks you for a serial number when you run it, it's the Kagi version.
Q. Have you written any other software I should know about?
A. Of course! I am also the author of DragThing, the popular alternative dock application. You can download a copy from the official web site at:
If you like PCalc, I'm sure you'll like DragThing too.