Great tool! We needed an easy to use app, for those not very familiar with SEO and we believe this is the perfect tool. Besides, the customer service it's very helpful.
We use this as part of our research toolkit. It isn't a tool we share with clients or widely on our team as it isn't as intuitive as others, but it still provides a valuable dataset we want.
Ahrefs is a solid tool for anyone who is even relatively serious about improving their website's keyword optimizations. Plus, in my experience, Ahrefs wins when it comes to identifying new backlinks for your site.