Keyword grouping by tags is handy. The support team is very helpful. The overall quality is good, and if you compare the quality for price ratio with tools like SEMRush and Ahrefs, you'll find Serpstat a good all rounded solution for position tracking and backlink management.
You can easily monitor the progress of your competitors. Can't outrank your competitor? Serpstat will show you their weak spots. Find keywords that your competitors are losing grasp on and use the opportunity to take their place in SERP.