Grammarly's writing engine is genuinely strong, and its job description tool benefits from that — clear, jargon-free output is Grammarly's whole reason to exist. The friction is the account requirement, which makes sense for a company monetizing writing assistance broadly but is unnecessary overhead for a single job posting.
SMBkits' job posting generator asks for the same basic inputs — role, responsibilities, requirements — and generates a full draft with no account or sign-in step. It's a narrower tool, built for one task instead of Grammarly's broader writing suite, which also includes tone checking, grammar correction, and long-form editing you won't need for a one-off job post.
There's a real difference in how the two tools are positioned, too: Grammarly's generator exists to demonstrate the writing engine and pull you into the broader product, so it's designed with conversion in mind. SMBkits' generator has no upstream product to convert you into — the job posting is the entire deliverable.
If you're already a Grammarly user for other writing, using their generator keeps everything in one account. If you just need one job posting drafted quickly without creating an account for it, the free generator skips that step entirely.