Has taken me 4 years to create (gravametrics.com)

Any questions on this I'd love some feedback been building this on the side for years.

Just found out that the email for login wasn't working which I've now sorted whoops !

I wish you the very best of luck with this. I can totally relate to spending forever on a project like this, and the feeling you get, when you finally debut.

I've done that, a few times. I'm doing it now. I have app that I've been working on for a year and a half (2 years, if you count the backend work, that I did several years ago). We'll probably be releasing, in the next few months.

I don't think that I have an application for this, myself, but I will be happy to share it with others, that may have the need.