Launch is just a start. Remember the golden saying of Reid Hoffman - "if you are not embarrassed by the first version of your product, you've launched too late."

So you have crossed one of the greatest hurdles - that is launch. Rest is bit easy now.

1. You need to focus on marketing now. It starts from your site.

2. Try to get some of your friends to signup. Analyse deeply what are the actions they are doing versus what you have expected them to do.

3. Focus on that one thing which you think is the highlight of your product. Tweak it, re-tweak it until it really stands apart from all your other offerings.

4. Go to local events, try to showcase it to any crowd you can get your hands on.

5. If you have a little budget, try to do content marketing. Try educating people in your niche what are the problems they are facing. You can start doing that on your company blog or other blogs on your niche.

Be your strongest critic, and you will continuously evolve.