Can I change the program after it is finished?

There is no single figure. Cost is driven by four things: the number of screens and reports, who builds it, whether data is shared across several computers, and how many changes you ask for after delivery. A ready-made package is cheaper to start but is an ongoing subscription, a developer bills for time and every change, and with an AI builder you pay a subscription and make changes yourself.

Copy the installer to the second computer on a USB drive, or download it from your account, then run it and follow the same steps you used on the first machine. Check first that the computer runs a supported Windows version. Note that the installer moves the program only, not locally stored data. To move data you need a backup that you restore there, or a shared cloud database.

Take a copy of the program's data regularly and keep it somewhere other than the computer itself: an external drive, a second disk or cloud storage. A simple rule is one copy every working day and a weekly copy kept outside the shop. Most important, test a restore at least once, because a backup you have never restored cannot be trusted when you need it.

Yes, this is called visual editing. Instead of explaining in words which element you mean, you click it in the preview and say what to change: the text, color, size, position, or hiding it. It solves the most tiring problem with AI builders, which is the tool changing something other than what you meant. Bigger changes to business logic are still clearer as a written description.