The main attraction of Fathom is its focus on privacy. We appreciate that they are privacy conscious. The dashboard is also easy to use and loads / analyzes data quickly. Also, enough cannot be said about their support - their team has helped us everything from basic setup to more advanced event tracking. Review collected by and hosted on G2.com.
The two biggest negatives of Fathom are a goofy data/filter glitch that will occasionally reset the timeframe of data returned, and there is no way (that I am aware of) to create custom referrer "buckets" so that referrers we identify are automatically grouped into a specific category. Review collected by and hosted on G2.com.