Ok, I am currently about to download this. I have been looking for a tool like this for the past little while. I tried esteem with very little success. I also tried Steemification through the google app store but that doesn't work properly either. The only way I currently see what has happened is I look at the steemitd.com site and see what has happened and then go looking. This has been a painstaking process. Especially as a new user who is trying to keep up with things efficiently. I like the idea that you can choose specific blogs to be notified of postings for. You are absolutely right that this is a game changer. I am pretty stoked right now. I will reply back later with my experience. Thanks for sharing.
Update
Less than an hour after downloading I have found Steemit heaven!!!the notifications are great but the fact that I can read the posts, upvote and comment right through the app is AMAZING!!! Thanks so much @brian.rrr