After 3 months of furiously coding on the project in the evenings and on weekends, I finally was ready to launch on ProductHunt. I knew the product had long ways to go in terms of quality, I wasn't happy with it at this stage, but I wanted to get it out of the door as quickly as possible to validate the idea.
So I whipped together a video presentation featuring some voice samples (all generated by my app) and then submitted it, along with some pictures and info, to ProductHunt.
The product was well received. It got picked up by ProductHunt editors, and was featured as the main product in the weekly newsletter. Within a few days I had over 2,500 members signed up, and received several emails with mostly positive feedback - and even a few questions about VC funding.
I knew the use case appealed to people after testing it on my friends, but I had not anticipated this rush.