We match Substack writers in niche finance communities and embed each other's signup CTAs — so every post you publish grows two newsletters at once.
Link your newsletter in seconds. We analyze your content, audience, and niche to build your writer profile.
Our algorithm pairs you with complementary writers — same finance niche, similar audience size, mutual growth potential.
Embedded CTAs in each other's posts drive signups on autopilot. Every post you publish now grows two newsletters.
SplitStack is designed specifically for Substack writers in the finance space.
Be first in line when we launch. No spam, ever.