Infindigm has released a tool called “proSEO - iPhone SEO Content Analyzer” that allows the user to surf the web using a Safari-like browser to narrow analysis down to a single page, and then allows the user to analyze the page by pressing a button. proSEO is an SEO tool written for the iPhone that helps website owners determine several important features about almost any webpage. The tool was developed so that anyone could quickly determine key "On-the-page"(factors that affect a page's performance in the SERP's (Search Engine Ranking Pages). With proSEO, a person can browse to a website using a browser control and selectively analyze the page for it's features. It cost $14.99 available on iTunes.
More info: proSEO