Spreadsheets

There are a few out there
My favourite is one posted by diktaf at reddit.com/r/icecreamery
Amazingly I can't find any discussion about it but I have learnt a lot from it and always use it.
I find most recipes produce something far too sweet and once you get an understanding of POD and PAC you can develop mixtures that suit your own taste.

I've developed the sheet further:

• all ingredients are selectable through drop downs
• mixture total weight may be customised easily
• warning if not enough eggs
• automatic prediction of serving temp PAC
• calculation of sugar %
• calculation of costs - work in progress

It's available here