Not very useful
I downloaded the app because the marketing packet inside my device’s box suggested it to help with setup and said it would let me see what my signal was like before and after. I personally didn’t find the set up videos to be helpful, since it’s easy and one of the items wasn’t even included with my product, despite choosing the correct one from the list. There’s also nowhere in the app that I can see to directly compare my signal before and after. I was expecting some sort of dashboard that showed I have X bars or signal strength without it and it raises me to Y bars or signal strength afterwards. Doesn’t feel like there’s a strong reason to keep the app without being able to monitor that or see things like my history or a map of towers. If those things were added, I’d use it on a regular basis.
