It's interesting to read this review of Weebly's Ipad app from PC Magazine (online this month). Clearly Weebly is in the vanguard in developing an app which is already well regarded, however it is not without glitches. The doesn't actually mention the fact the the Weebly Ipad app doesn't offer blog functionality! But it does seem to offer more than most.
So far it seems to me that it's best to find a pc when wanting to add blog entries - perhaps just cutting and pasting them in. The Web app can then be used for other pages... but it's still a case of testing, testing! Bev