There's no easy way to manage your promo codes and we made a pretty awesome solution. We're a team of 2, a full-stack dev and a designer, working 100% remotely.
Status: We're now in private beta and we are onboarding new developers every day.
Next steps: - buy validator.com (it's 95k, so it'll take some time) - create a blog series with independent developers sharing their stories (similar to IndieHackers) - iterate.