SHOW-IH: I built in 3 weeks an app to track my audience growth.

Hi everyone.
For the last 3 weeks, I’ve been working on a side project. I own several accounts for my projects, some Instagram accounts, twitters, mail chimp lists, GitHub repositories, etc (you know what I mean). And it was really hard to keep track of how my audience was growing (or not) in any of them. I never remind how many followers, or subscriber I have in each one, and if my audience on them is really growing. Any of the most known platforms has a historical view neither.
So I decided to build my own solution.
I create a very simple app, that sends directly to your inbox a report showing the followers (subscribers, etc) you have in your accounts. Also, it saves the historical data, so it shows how much your audience has grown.
I choose for an email report, because I don’t want another app to remember, I don’t want to have to log in and check metrics in a dashboard. I prefer to receive a scheduled report that I could check when I read my emails. Easy and simple. I tell you, is really exciting to check your emails and see you have received a new report, willing to see what your audience is growing.
As I really enjoyed the result, I decided to open it to the world. Is FREE, but I added a premium plan, to see if I can make some money with it haha.

The app is http://trackmyaudience.xyz, let me know what do you think, any feedback is appreciated.

For the tech lovers: I built it with ExpressJS (Node), Vuejs + Bulma, Mysql DB and Nodemailer. I would love to answer any technical questions if you have any.

Thanks
Nicolas Granja