Grammarly will catch 'principle' vs 'principal' and fix your comma splice. It will not catch 'FDA-approved stem cells' - a phrase that has been the basis for warning letters for years.
The bottom line
Grammarly is an outstanding grammar and style tool. It was never designed as a regulatory compliance tool, and it does not function as one. Running healthcare marketing copy through Grammarly will improve its grammar and style with high reliability. It will not reduce your FDA or FTC enforcement exposure, because Grammarly does not model that problem. Keep Grammarly. Add RegenCompliance. They solve different problems at different layers.
Short verdict
Grammarly fixes grammar. RegenCompliance catches the phrases that trigger federal enforcement. Completely different problems.
Honest comparison
No product comparison page is useful if it only lists weaknesses. Here is what Grammarly genuinely does well, and where it is the right tool.
Grammarly's core grammar and spelling engine is genuinely among the best in software. For catching typos, comma splices, subject-verb mismatches, and punctuation issues, it is hard to beat.
Grammarly flags passive voice, wordy sentences, hedge words, unclear antecedents. For making writing tighter and more readable, the style engine is genuinely useful.
The tone detector is good at catching unintentionally aggressive or overly formal language. Useful for patient-facing communication where tone matters as much as content.
Browser extension, Word, Google Docs, email clients, Slack. Grammarly shows up wherever you type, which makes adoption frictionless in a way that requires-paste-in tools do not match.
Where we are purpose-built
One category, one rule set, one job. These are the reasons clinics choose a purpose-built compliance scanner over a grammar and style assistant.
Our rule set starts with the specific phrases cited in actual FDA warning letters and FTC settlements. 'Cures,' 'heals,' 'FDA-approved' applied to a non-approved product, 'guaranteed results,' 'proven to reverse,' typical-experience testimonials without disclosure. Grammarly flags none of these.
Compliance is not a word-level problem. 'Our patients report feeling better' is compliant. 'Our treatment helps patients feel better' is structure-function. 'Our treatment treats chronic fatigue' is a disease claim. Same topic, three different regulatory categories. Our engine is built around these distinctions.
Every week, the FDA issues new warning letters and the FTC announces new enforcement actions. Our rule set ingests these daily. A grammar tool's rule set is grammar - which does not need weekly updates, because grammar does not change.
Grammarly saves documents and edit history, but that history is not structured as pre-publish compliance evidence. Our scan records are exactly that structure: timestamp, score, flagged phrases, rule citations, PDF export. Designed for warning-letter response, not for content collaboration.
Feature matrix
Every capability, side by side. No asterisks, no marketing gloss.
| Feature | RegenCompliance | Grammarly |
|---|---|---|
| Healthcare-specific rule set | ||
| FDA warning letter data | ||
| FTC enforcement data | ||
| Compliant-alternative rewrites with reasoning | ||
| 0–100 compliance score | ||
| Pre-publish audit trail with PDF export | ||
| Grammar and spelling check | ||
| Tone detection | ||
| Readability scoring | ||
| Inline real-time editor | ||
| Plagiarism detection | ||
| Word choice & clarity suggestions | ||
| Monthly cost | $297 founding / $497 standard | $12–$25 per seat |
When to use which
Specific scenarios, specific recommendations. Some favor Grammarly. Some favor us. Most favor both in sequence.
Use Grammarly inline while you write (grammar, tone, clarity). When the draft is done, paste into RegenCompliance for the compliance scan. Different passes, different tools.
Grammarly for readability and plain-language checks. RegenCompliance for the 'treats,' 'heals,' 'cures' language that sometimes slips into what should be educational copy.
Captions are short enough that grammar issues are already obvious. The compliance exposure is the hidden problem - short captions violate the FTC Endorsement Guides, typical-experience rules, and structure-function boundary constantly.
No public audience, no regulatory exposure. Grammarly is the right tool. Do not run internal docs through RegenCompliance - it is not that kind of check.
Grammarly for tone. RegenCompliance for any outcome or efficacy language. Individual patient emails are considered marketing under the FTC's definition when they describe treatments or outcomes.
Pricing
RegenCompliance (Founding)
$297/mo
Locked for life · 3 seats · unlimited scans · FDA/FTC rule engine · audit trail
Grammarly Premium / Business
$12–$25/mo per seat
Per seat billing · grammar, style, tone · no regulatory rules
Every tool has boundaries. These are the scenarios where Grammarly (or another approach) is genuinely better than RegenCompliance.
Your specialty specifically
The comparison above is general. Your specialty has its own enforcement patterns, claim categories, and regulatory considerations. Pick yours.
FAQ
Make the switch
30-second scans. Unlimited runs. Founding rate $297/mo locked in for life. Cancel anytime.
More comparisons
See allChatGPT is where the copy gets written. RegenCompliance is where the compliance review happens before it goes live.
Read comparisonClaude writes copy that sounds compliant. RegenCompliance is the layer that actually checks it against this week's FDA warning letters.
Read comparisonPerplexity tells you what the rule says. RegenCompliance tells you which sentences in your homepage break the rule.
Read comparisonFurther reading
Blog posts that go deeper on topics covered in this comparison - enforcement patterns, specialty considerations, and tactical implementation.
Seven specific words generate a disproportionate share of FDA warning letters and FTC actions in healthcare marketing. Here is the 2026 list - with the compliant alternative for every word and five adjacent phrases that drag you into the same violation.
Read articleOne line separates legal marketing from a warning letter: the difference between a structure/function claim and a disease claim. Most practice owners think they know where the line is. They are usually wrong by one or two key phrases.
Read articleA tactical framework any clinic can run in two weeks: inventory, pageview-weighted triage, claim-category scan, rewrite-at-source style guide updates, and archive retirement. With the exact sequencing and who does what.
Read article