I launched Zigpoll in April of this year after about 6 months of development. I posted on PH and IH, built a Shopify app, and did the rounds posting on various free forums and lists to spread awareness.
In the hopes that sharing will be helpful to some other indie hacker, here's some of the meaningful numbers for the year:
598 Accounts (a user can have more than one account if they want)
11 paid accounts
68,436 people have filled out a Zigpoll on the web
I think it's a pretty good start for a budget of zero. Although it definitely doesn't support me - I think there is wind in the sails since at least 11 people are willing to pay for it.
The plan for 2020 is to iterate and expand out on the features that get the most use from our paying customers. I'm excited for what it has in store!