Early access open

Your newsletter,
growing itself.

NicheX automatically matches Substack writers in adjacent niches and orchestrates curated subscriber swaps — so you grow with readers who actually care, not random cold traffic.

Get Started — $29/mo →

Join the Waitlist See how it works

5k–50k

subscriber range

Adjacent

niche matching

Automated

swaps

✦indie hacking✦startup marketing✦psychology✦self-improvement✦personal finance✦productivity✦venture capital✦creator economy✦mental health✦growth hacking✦web3✦bootstrapping✦indie hacking✦startup marketing✦psychology✦self-improvement✦personal finance✦productivity✦venture capital✦creator economy✦mental health✦growth hacking✦web3✦bootstrapping

How it works

Three steps to a
self-growing newsletter.

⌁

Step 01

Connect your Substack

Link your publication in seconds. We analyze your niche, audience size, and content themes — nothing else is shared.

◎

Step 02

We find your match

Our algorithm surfaces writers in adjacent niches whose audiences overlap with your ideal reader. No cold outreach, no awkward DMs.

⇌

Step 03

Subscribers swap automatically

Curated cross-promotions go live on both newsletters. Engaged readers land in your inbox. You write — we handle growth.

Adjacent

niche-only matching

No random audience dilution

Curated

subscriber quality

Readers who actually stay

Zero

cold outreach needed

Fully automated introductions

Both ways

growth symmetry

Every swap is mutually beneficial

Early access

Ready to grow differently?

We're onboarding Substack writers with 5k–50k subscribers. Join the waitlist and we'll reach out when your spot is ready.