You should launch your product on Product Hunt. It has become the place to go to for early adopters to find new and interesting products and also to get loads and loads of users if you have something cool to share. To get listed on Product Hunt you need to find someone that is unlocked for adding new products and ideally has lots of creds on the site. There is a site called hunterlist.co - if you know anyone on page 1 of that list, get that person to submit you to PH.