That is not a good method. It’s not the equal distance that matters, but area. For example, H and L have totally different space on the right side (L has a lot more open space). The left side can be the same, but the right sidebearing of the L should have much less space than that of H. Just check any good fonts and observe spacing for more detail. But the basic idea is, refine sidebearings as much as possible, and kern as little as possible.
For the nice features about the app, go to the Getting Started page and see videos and handbooks.