A good App but needs more robust PGN parsing – Chess Viewer Review

I like the app for browsing PGN files on my IPad and the Everyman chess books are great but PGN files created in other programs sometimes fail to parse. I own a Monroi which I use to keep chess notation and it doesn't always parse games created on the Monroi. Another suggestion would be to add an engine to do analysis.
Review by JamesCoons on Chess Viewer.