Does anyone here use calculators to estimate jobs? I see some sites online offering them, but I do not want to sign up with crazy monthly rates.
I officially became a nerd in 1962 when I took my first computer class. I have been known to spend hours writing code to save a few minutes work.
But I'm not to sure about anything but a four function calculator, a printed form, and a pencil for something like this.
To be comprehensive a program would have to have a lot of bells and whistles and you might spend so much time with check boxes, radio buttons and numbers that you ignore the customer and that black mold reaching down from the ceiling for you.
Experience will make you the best judge of a job and paying attention to the customer will get it for you.
You can always ask if they want a formal written proposal or is your worksheet good enough.
Note that you have asked a "closed" question. "Do you want A or B" as opposed to an open one "What do you want to do?" and you have assumed they will use you.
I sold a lot of computers with this technique, learned in a professional sales course.