[welder]

They have a 45 day free trial[1]

Suggestion: add text below the green signup button saying, "Free 45 day trial, no credit card required". I think that would also help increase signup rates.

[1] https://news.ycombinator.com/item?id=7246383

[lugg]

I'd suggest, if there isn't enough signups happening, free for solo usage, cost for teams might be the way to go. Get people hooked using it for their own time to the point they make work pay for it for the whole team.