After some chat back and forth, and me describing my ideal (non-existing) tool, he offered to have a go at making one for me. Just because he likes making things, all offers of payment refused.
This weekend I received not one, but three versions of the tool I described! I’m so touched that he would go through all this trouble and I can’t wait to try them out. Thank you very very much Ben Liddell, you have enriched my life. It’s people like you and your generous acts of kindness that make the world go round.