SEO Checker is an effective app that offers seo tools to help you analyse your web sites, everything you need to increase ranking and speed up your web sites.
Features
SEO metrics (alexa ranking, semrush, backlinks, pagespeed score, and more )
PageSpeed insights
Links extractor
Content analysis
Website speed tips
Advice system
Meta-tags crawler and analyzer
Score system
Export as PDF
What’s new in version 2.0
Updated on Sep 03 2018
Version 2.0:
Security Headers which is used specially to rate your site from A - F
Virus/Malware Scan to detect if your site is clean
*sigh* Did not try demo version. Found out after purchase that it does not run under Yosemite. My fault, but since I can't test it I can't rate it, so the rating is just 2.5 as an average - unfair I know but like I said I can't run it so I can't test it.