RT @jamesthomson@twitter.com

To celebrate my calculator app PCalc turning 30 today, I've written up all the history I can still remember:

http://pcalc.com/thirty

There's also a rare 30%-off sale, which runs until midnight tonight, PST.

Mac:
https://pcalc.com/store/pcalcmac

iOS:
https://pcalc.com/store/pcalc

Thank you!

🐦🔗: https://twitter.com/jamesthomson/status/1606261245346074625