You might want to look at targeting Wordpress Plugin developers with this. That's a good niche where this might be a good fit. There is already some competition

You might want to look at targeting Wordpress Plugin developers with this. That's a good niche where this might be a good fit. There is already some competition there so you'd need to rework your offering some. With web applications usually I'm either developing them for the client so it is their code or I'm licensing them as a SaaS app from my server so I don't really need anything like this. This doesn't feel like a good product market fit, I'd keep using it and work on targeting WordPress developers. WordPress isn't the greatest ecosystem but there is money to be made there.