Super useful. So many products kick out side projects or hackathon worthy reporting only apps that just don't cut it (especially when focusing on mobile) ex: Mixpanel, ad platforms. Perhaps these are best suited for smaller shops that can really focus on solving a gap instead of "shipping a reporting app".
This is a really useful tiny tool that helps save me a ton of time. Now, I don't have to go into MailChimp, click a half dozen times and find out how my lists and campaigns are doing. I just go into the sidebar on my Mac, and check the stats of my latest campaigns right there. The time savings alone are worth the cost.
Braavo
CryptoPoops
This is Broken