the issue is that if you were going to get a non-BSW streaming service and this app, you really aren't saving money over DTVS.
The only way is if you get one of the 35 dollar sling packages and this app, which would save you 30 dollars a month, but you would not get everything (ie, you need to pick FS1 or ESPN). if you get the blue/orange package, its 15 dollars a month of savings.
if you get YTYV or HL and this app, its 85 dollars which is the same as Direct TV stream with a bigger headache.
if you just want to watch the brewers, this is great though.