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I want to try and get into the 21st century and start using the Ipad for work.
I do all sorts of plumbing and heating installs, maintenance and repairs.
Have you tried Gaschecker or similar software?
Looking for something simple to use and professional for all my important customers (which is all of them).
No one?
How's my grammar and punctuation then?
Someone will be along shortly to tell you you're not a 'Real' Engineer. 😀
Other than that, can't help you, have you tried a search on the App Store for gas, heating, etc.?
it has a calculator app dun it ? 😉
dont use one personally and dont know of anybody that uses one. ( Rochdale, NOT silicon valley!)