Always great to see more RSS readers. Are you thinking about making it API compatible with others so people can use any of the existing apps? I'm currently using https://github.com/miniflux/miniflux (Also written in Go) and it supports the Fever API which means I can use any app on most platforms to sync with.
I personally don't use apps, but if there'll be enough interest from the community, I might consider making it fever-compatible in the future.