After the last update, I went to Reddit to ask for some first impressions. Following the post, I got about a hundred visits with some returning visitors, and one who read the Reddit post about a week later happened to invest quite some time into using the app and providing some very valuable feedback.
I wasn't expecting the Reddit post to be so effective: It has ranked quite high up the Google results for some of my target keywords, and I can see more new users coming in through that post in the future.
More unexpected was the impact of a few engaging users on my overall motivation. Since the post, I've been feeling much better about fireful.