I am interested in colourising some old black and white family photographs after seeing some colourised photographs on a Facebook page. I asked them how they did it and they said that they did it on a Smartphone using apps.

I don't have a smartphone, the main reasons being that I don't feel that I have the dexterity to make best use of a smartphone and my eye sight isn't the best. I prefer to use a desktop computer, I am familiar with Windows, the screen is a decent size and I can manipulate on screen objects using a mouse.

Does anyone know if there is a program that I could use to colourise old black and white photographs on a Windows 10 pc, please? Ideally something that is not too expensive, doesn't involve a subscription service and would be relatively easy to for me to use (rather than paying someone else to do it).