Here is a Link and a screen shot to a new discovery that is really great!
This Program, “ChessPad”, is great for recording, and creating PGN game files or analyzing an existing file. I find it very useful for all sorts of chess game applications. The one thing that seems to be unique among game file editors is that you can back up and revise recording mistakes very easily. Notably, this is not a chess computer game, which accompanies most recording programs. The dedication to just a recording program function, makes this App perfect for competitive chess because the temptation to use the computer to find a best move against your opponent is removed. In fact the authors of this program have asked the chess federation to certify the program for tournament games.
Try it. I think you will find it a VERY helpful utility.