What do you like best?
I love that I can search for game publishers and see all their titles, release dates, and performance metrics. It's especially useful to see downloads by country, as it gives me insight into which games are likely in soft launch or region-specific.
What do you dislike?
It would be nice to see when apps are featured, but nothing really comes to mind.
Recommendations to others considering the product
Not sure of the cost, but from my limited experience, Apptopia seems to be quite a bit lighter than a service like App Annie, for example. I would assume it's less expensive. For my needs, Apptopia is perfect, but it really depends on your role and how granular you want to be on the data and performance side. You should do your own research and see which USP wins you over.
What business problems are you solving with the product? What benefits have you realized?
Apptopia is a huge help in tracking app release dates, updates, and performance, without needing to bug our customer for that information. A poorly performing app or slow rollout could indicate a risk to our business relationship with that developer/publisher, so it helps us be more proactive in servicing our clients.