WriterExGet Early Access - $49

For Substack writers in indie hacking & startup advice

Grow Your Substack
Through Smart
Cross-Promotions

WriterEx matches you with relevant newsletters, ranks partners by real engagement, and A/B tests your promo placements — so every swap has a better shot at converting.

Matched by engagement, not vanity metricsA/B test swap copy & placementsBuilt for niche, high-signal newsletters

Most newsletter cross-promotions still happen through cold DMs, spreadsheets, and gut feel. Writers spend time chasing partners without knowing which swaps will actually bring in engaged subscribers.

The process

How it works

01

Connect Your Substack

Submit your newsletter and a few details about your audience. We review your engagement profile and niche fit.

02

Get Matched

WriterEx surfaces relevant swap partners ranked by engagement quality — not just follower count. No more cold DM roulette.

03

Swap & Track

Launch cross-promotions with built-in A/B testing. See which partners and placements actually drive subscriber growth.

What you get

Built for writers who takegrowth seriously

Smart matching

Matched by engagement, not ego metrics

Stop chasing newsletters with big numbers and tiny open rates. WriterEx ranks potential swap partners by audience relevance and real engagement quality.

A/B Testing

Built-in testing for every swap

Test subject lines, blurb copy, and placement positions without setting up another tool. Let the data tell you which combinations convert best.

Automation

Automated swaps, less overhead

WriterEx simplifies partner coordination so cross-promotion becomes repeatable, not a one-off scramble. Spend time writing, not managing deals.

200+

writers already on the waitlist

Substack writers in SaaS, startups, and indie hackingNewsletters from 500 to 50k+ subscribersFounders, operators, and solo creators

“Founding writer testimonial coming soon.”

Founding writer

Indie hacking newsletter · Early cohort

Early access

Join the founding cohort.

We’re opening WriterEx to a small group of writers first. Get matched early, shape the product, and lock in founding-member pricing before we launch publicly.

Priority access to the matching engine
Direct onboarding support from the founder
Founding-member pricing when full plans launch
First access to A/B testing features

Founding member offer

$49 lifetime access

Get Early Access - $49

Pay once on Stripe for lifetime founding-member access, or join the waitlist if you want us to review your newsletter first.

Get early access now

Checkout is live for the $49 lifetime founding-member offer. Prefer to talk first? Join the waitlist below and we’ll review your Substack.

Get Early Access - $49
Or join the waitlist

We’ll review your newsletter for cohort fit.