Try to post on producthunt.com - you need to know someone who can submit it there for you though. If you make it onto the product hunt page, you will get much m

Try to post on producthunt.com - you need to know someone who can submit it there for you though. If you make it onto the product hunt page, you will get much more than just 100 signups. There are loads of posts out there talking about how to get listed on product hunt.