There's always coinbin.org and a couple of apps that you can set up to deliver you with alerts on price fluctuations and news. What's different with your product?
honestly, I started building this service for 2 principal reasons:
1. None of the free apps that I found meet my requirements and I decided to build something that I can grow it to my needs and let the community grow it as well.
2. I'm mostly a back-end guy, it is quite difficult to explain what you can do because most of our work is usually private, now I have something in my portfolio that I can show while looking for clients or jobs.
Just to give an example, I wanted to be notified when an exchange supports a new currency and that's one of the alerts that I added, now I can receive an email instead of be checking the exchange sites or social networks, as this works with the APIs, I could even get notified faster than when they announce it.