Earlier quoted context omitted.
It could also benefit from better copy. "Everything from a timeline's colour scheme and date range to its background image and intro text can be changed in the Settings tab." -- a wall of badly-punctuated text, really unappealing. Kudos for the app though, it does look nice. More auto-importing and some iPhone action please :)
Not wanting to be confrontational but what are you talking about. There is nothing wrong with the punctuation of that text. It might not be Dostoyevskian in its elegance but it is grammatically correct.
I've lost my breath trying to read it... would use a comma or two. It's also completely useless and out of context -- that's a help box, not a sales pitch.