Sound Familiar?
The pain points every newsletter writer faces
Spending 10-20 hours finding one swap partner
Awkward DMs asking strangers for their subscriber count
Size mismatches waste everyone's time
No idea which swaps actually worked
Partners ghost or don't follow through
Starting from scratch every single time
There has to be a better way.
Introducing lttr.io
The fastest way to find, coordinate, and track newsletter recommendation swaps.
Perfect Matches
Get matched with verified newsletters in your niche with similar subscriber counts
Track Results
See exactly how many subscribers came from each swap and identify your best partners
Verified Numbers
All subscriber counts are verified through Substack's API - no more guessing
What You Get
Everything you need to grow your newsletter faster
Save 15+ hours per month. Grow faster with better partners.
How It Works
2 minutes to your first match
Connect Your Substack
We verify your subscriber count and pull your niche
Browse Perfect Matches
See writers with similar subscriber counts in your niche. Filter by size, topic, engagement rate.
Request Swaps
One-click requests with customizable messages. Built-in templates for timing and coordination.
Track Results
See exactly how many subscribers came from each swap. Build your network of reliable partners.
Simple, Founder-Friendly Pricing
No hidden fees. Cancel anytime.
What Newsletter Writers Are Saying
"I did 12 swaps manually and gained 2,400 subscribers. But finding partners took 20+ hours each time. lttr.io cut that to minutes."
Sarah Chen
Tech Trends Weekly • 8,500 subscribers
"The hardest part was always finding writers my size who actually respond. Now I get matched instantly with verified newsletters."
Marcus Johnson
The Growth Playbook • 5,200 subscribers
"Grew from 2,000 to 4,500 subscribers in 3 months just from swaps I found here. The matching algorithm is incredibly accurate."
Emily Rodriguez
Creative Founders • 4,500 subscribers
"Finally, a platform that verifies subscriber counts. No more awkward conversations about newsletter size."
David Park
Finance for Creators • 12,000 subscribers
Frequently Asked Questions
How do you verify subscriber counts?
We connect directly to Substack to pull verified numbers. No more trusting someone's word.
What if I can't find matches in my niche?
We'll email you immediately when new writers join your niche. Plus, many writers find success with adjacent niches.
Do you take a cut of my growth?
Nope. Flat monthly fee. We don't touch your revenue or subscribers.
What if my swap partner doesn't follow through?
We track reliability with a rating system. You'll see who's trustworthy before requesting a swap.
How much does it cost?
Free tier gives you 10 matches per day and 3 swap requests per month. Pro is $20/mo for unlimited access.
Can I try it before paying?
Absolutely! Start free and upgrade when you need more swaps. No credit card required to sign up.