Is Letterfork free to try, and which newsletter platforms does it work with?

Letterfork is free for your first three rewrites, and it works with newsletters from Substack, Beehiiv, and Ghost. You don't need a credit card to start. After the three free rewrites, you'd move to a paid plan — the site links to a pricing page, but the specific prices and plan limits aren't stated in the material available here, so check the current pricing page before committing.

What the free tier actually covers

The offer is stated plainly on the site: "Free for your first three rewrites" and "No credit card." That means you can run three newsletter issues through the tool and see the output before paying anything.

Three rewrites is enough to test the thing that matters most — whether the platform-native posts actually sound like you. One rewrite tells you if the tool works at all. Three lets you try different issues (a short one, a long one, one with a strong personal voice) and see whether the voice-matching holds up across them.

A few things the free tier does not tell you from the available material:

• Whether the three rewrites expire or stay available indefinitely
• Whether there are per-rewrite limits on length or number of platforms
• What the paid tiers cost or include

For those, go to the pricing page directly.

Which newsletter platforms are supported

These three are named explicitly in the site's description and repeated in the free-trial line ("works with Substack, Beehiiv, Ghost"). If you publish on a different platform — ConvertKit, Mailchimp, WordPress newsletters, a custom setup — there's no indication in the available material that it's supported.

One practical note: the workflow accepts "a newsletter URL or full text," so even if your platform isn't on the list, pasting the full text of an issue is the input path described. Whether that produces the same result as a recognized URL isn't specified.

What you get per rewrite

Each newsletter issue is turned into posts for seven platforms:

• LinkedIn
• X (as a thread)
• Bluesky
• Substack Notes
• Threads
• Instagram (captions)
• Reddit (drafts)

The site frames the output as "platform-native" — meaning the same piece is reshaped for each platform's format and norms rather than copy-pasted everywhere. The example on the site shows one newsletter excerpt becoming a LinkedIn post and a multi-part X thread, each with different structure and length.

The voice-training step (do this first)

Before your free rewrites are useful, there's a one-time setup: you drop in 5–10 of your past newsletters, and Letterfork extracts your "sentence rhythm, opening habits, vocabulary, and humor."

This matters for your free-trial decision. If you skip or rush this step, your three free rewrites will test the tool without your voice profile loaded — and you'll get a misleading answer about whether it sounds like you. Do the training first, then spend the free rewrites.

How to decide

Try it free if: you publish on Substack, Beehiiv, or Ghost, you already have 5–10 past issues to train the voice profile, and the repurposing work is a real time cost for you. The site's own framing puts that cost at 3–4 hours per issue, or roughly 15 hours a month.

Check the pricing page first if: you need to know the cost before investing setup time, or you want to confirm cancellation terms. The site says "cancel any time," but the plan structure behind that isn't in the material here.

Look elsewhere if: you publish on a platform outside the three named ones and need confirmed support, or you need per-rewrite limits and pricing in writing before you start.

The honest summary: the free trial is real and low-friction (no card), the platform support is narrow but clearly stated, and the one number you actually need to make a spending decision — the price — lives on a page you should open yourself.