Not sure if something like this is available - but I need a solution for calculations with logic. Actually, the calculations are static numbers. It’s probably easier to show you what I’m looking for than trying to explain. Have a look at the logic on this page: https://smartchoicemri.com/price-calculator/

Joe’s Pi stack is just about the only calc stack you need, it uses JS maths so you can build some really complex calculations in it with ease.

Here’s a couple of my tests:

https://www.sandbox.russam.me/pi-architect/

https://www.sandbox.russam.me/pi-date/

The Demo on Joe’s site is quite good (I may have had a hand in it :) )

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1LD also have a calculation stack called Formula.

However Joe’s Pi stack is a lot more powerful, the only Thing to note is that it relies on input from other form stack elements as it doesn’t have any of its own…though somehow I think that won’t be a problem for you Dave

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