HowToWrite.io

You can try HowToWrite.io for free, but only up to a point: a limited number of documents are available before it asks you to sign up, and some features sit behind a paywall.

The pricing model is listed as free, so expect the full set to need an account and possibly a paid plan.

HowToWrite.io is an AI writing assistant that produces personalized content, including letters and general text, from your prompts.

Its paid features include unlimited AI-powered writing and unlimited free revisions, so you can keep reworking a draft without hitting a cap on edits.

Documents are auto-saved to your profile, which is handy if you come back to the same letter or piece several times.

Paying users also get priority support, the chance to request new features, and exclusive new categories as they are added.

As an AI letter writer and text generator, HowToWrite.io suits everyday personal and practical writing more than long, complex projects.

The main catch is the paywall: check what the free documents cover before you build a routine around it.