Grammarly's pricing page leads with "$12/month" for Pro (what used to be called Premium) — but that figure is the annual plan averaged out, not what actually gets charged each month. Here's what Free actually leaves out, what the real monthly cost looks like under each billing option, and where a dedicated free grammar checker fits instead.
Trusted by students at
Grammarly's own plan comparison shows Free covering real-time spelling, grammar, and punctuation checking, basic tone detection, and 100 AI prompts a month. What it doesn't include: plagiarism checking, full-sentence AI rewrites, tone-adjustment suggestions, and AI-generated-text detection — all of that is gated behind Pro specifically, according to Grammarly's own current plans page.
For a student mainly checking grammar and spelling before submitting an essay, Free covers the actual core use case. The gap shows up if you also want a plagiarism check or AI-detection read on the same draft — those are separate, paid features on Grammarly's side, not part of the free tier at all.
This is the part worth reading closely: Grammarly Pro's billing works out to $30/month if you pay monthly, $60 every three months ($20/month averaged) on the quarterly plan, or $144 charged upfront once a year on the annual plan — which averages to the $12/month figure that appears as the headline price on Grammarly's marketing. Unless you select annual billing specifically, you won't be paying $12 in any given month.
That distinction matters because it's a documented source of billing confusion — the annual plan's real cost is $144 charged all at once, not $12 recurring monthly, and missing that difference before subscribing is an easy way to be surprised at renewal.
StudyPilot's grammar checker catches grammar, spelling, punctuation, word choice, passive voice, run-ons, and comma splices, with one-click fixes and plain-English explanations — and it's stated as free every day with no word limit on basic checks, no credit card, and no trial period to remember to cancel.
It doesn't replace Grammarly Pro's full feature set — Grammarly's plagiarism checking, AI-rewrite tools, and tone-adjustment suggestions go further than a grammar checker alone covers. If what you actually need day-to-day is catching mistakes before you submit, rather than a full writing-assistant subscription, that's the more common case a free grammar checker is built for.
Free every day, no word limit on basic checks, no credit card and no trial to remember to cancel.
Check My Essay Free →