As a SEO Professional I cannot deny that this tool is very basic and simple to use. But it is nevertheless very useful also for SEO addicted. In fact, I believe that it is a wonderful tool on-the-go for fast checking any SERP. Besides, if you go further, you can also find the word count for the best results in SERPs. This is a very useful stat to check the competitors and this tool provides the very basic data at the speed of light.
I use every day this tool, since I bought it and I recommend it without any doubt.