It's not perfect and takes some figuring out but Quicklytics (iPhone & IPad) is an extraordinarily useful tool as is the iPad app simply called Analytics. I kind of use them both in tandem - what I don't get from... I can get from the other.
I've been talking with the Quicklytics developer and there should be an update soon that resolves some current issues and will offer additional features. This same developer has a feature rich app (iPhone & iPad) for AdSense account monitoring called QuickAdsense that I also find quite useful.