Brightness issue on home computer

I don't know if this is really the right place to ask, but I've run into a few problems while making some files on my home computer. When I work on them, I usually have to darken a few things on my document. But whenever I view the entire thing on another device, it appears to be a lot darker than it shows on my home computer, so I won't really know how dark I should make my layers. Any way to fix this sort of thing?