Interesting first impressions of the iPhone from Jon Gruber. Overall he loves it, but his comments about the calendar app and note capabilities of iPhone indicate that there’s room for improvement.

An exerpt from his comments about the calendar:

iPhone Calendar’s killer feature is list view. I’ve wanted a view like this in iCal ever since it came out. It is data-rich, especially important with the iPhone’s small screen. Nice touch when you scroll – the date headers “stick” to the top of the screen until all of the events in that day have scrolled by.

and the iPhone’s notes feature:

The entire iPhone UI is set in one typeface – Helvetica – and it’s gorgeous. But Notes, in a lame attempt to be “friendly”, displays a UI that looks like a pad of yellow legal paper, and uses the handwriting-esque Marker Felt as the font for note text. This is not adjustable. Marker Felt is silly, ugly, and worst of all, hard to read.

I’m really interested to see how third-party software vendors will fill these gaps, and whether Internet apps will work well enough on the iPhone to render any weaknesses in the iPhone’s native apps moot.