Free Resources

Two resources for the point where solo developers get stuck after shipping — getting your first users. No sign-up needed.

Ebook · 42p (Korean)

Why is no one using what I vibe-coded?

Cold-email reply rates, GitHub outreach, why community promotion fails — all from real data. Includes 12 copy-paste templates. (Korean-language PDF.)

Download PDF
Notion template

First-users 30-day action plan

A ready-made execution template: 30-day calendar + outreach log + weekly metrics. One goal — "never have a zero-outreach day."

Open in Notion
Have a paused project? List it Sell guide

Both resources made by CoreLabs. Terms · Contact.