The Grammarly alternative that rewrites in your voice.
Grammarly is grammar-first. Penshift is rewriting-first. Nine paraphrase modes, a dedicated AI Humanizer, voice matching from a writing sample, plus grammar correction in the same workbench. Penshift Pro is $7.99/month annual versus Grammarly Premium at $12. Honestly, if rewriting is most of your work, you're paying Grammarly for the wrong job.
Grammarly vs Penshift, the short version.
Penshift Pro is one-third cheaper than Grammarly Premium on the equivalent plan.
Penshift starts with rewriting (humaniser, paraphraser) and adds grammar. Grammarly is the reverse.
Grammarly's tone suggestions aren't a humaniser. Penshift's humaniser is built to strip detector-flagged AI patterns.
Penshift mirrors a sample you paste. Grammarly's Brand Voice is a Business-tier feature.
Penshift vs Grammarly, line by line.
Last verified April 2026. Pricing reflects Grammarly's publicly listed plans on grammarly.com. Penshift wins on rewriting and price; Grammarly wins on coverage and team plans.
| Feature | Penshift | Grammarly |
|---|---|---|
Pro plan price (annual) Per month, billed yearly | $7.99 | $12 |
Pro plan price (monthly) Month-to-month | $14.99 | $30 |
Paraphrase modes Distinct rewrite voices | 9 modes | Tone suggestions only |
Dedicated AI Humanizer Strips detector-flagged AI patterns | Yes | No |
Voice matching from sample Mirror your own writing | Yes (Free tier) | Business tier only |
Custom rewrite mode Bring your own instructions | Yes | No |
Translator Faithful, register-matched | 13 languages | No |
Summariser Condense long-form to essentials | Yes | No |
AI Detector Score 0-100% AI | Yes | Yes |
Plagiarism checker Web-source matching | Yes | Yes |
Grammar check Mechanics-only fix | Yes (voice preserved) | Yes (industry standard) |
Browser-everywhere coverage Inline writing assistant on every site | Chrome only | Chrome, Edge, Firefox, Safari, Word, Outlook, desktop apps |
Microsoft Word integration Native add-in | No | Yes |
Team / business plans Multi-seat with admin controls | No (planned) | Yes |
Grammarly is a trademark of Grammarly, Inc. Penshift is not affiliated with, endorsed by, or sponsored by Grammarly. Pricing and feature claims reflect publicly listed information and may change without notice.
Pick the right tool for the job.
- You draft with AI and want the final prose in your own voice.
- Most of your work is rewriting, paraphrasing, summarising, or translating.
- You want a single workbench instead of five subscriptions.
- You care about a generous free tier and a sub-$10/mo Pro plan.
- You live in Word, Outlook, or Google Docs all day.
- Grammar correction is most of what you need.
- You manage a team of 10+ writers and need centralised admin.
- Native browser-everywhere coverage is non-negotiable.
Questions writers ask before switching.
Why switch from Grammarly to Penshift?
Different jobs to be done. Grammarly is grammar-first. Penshift is rewriting-first. If your work is mostly fixing typos and punctuation as you type across Word, Outlook, and email, Grammarly's coverage is hard to beat. If your work is rewriting AI drafts to sound human, paraphrasing in different voices, or summarising long content, Penshift is built for that and Grammarly isn't. Plus Penshift Pro is $7.99/mo annual versus Grammarly Premium at $12.
Does Penshift fix grammar like Grammarly does?
Yes, but with a different philosophy. Grammarly aims for ‘correct'. Penshift's grammar tool fixes mechanics (typos, agreement, punctuation) while preserving your voice. UK or US spelling stays as you wrote it. The trade-off: Grammarly's grammar database is broader and more conservative; Penshift's is tighter and won't try to flatten your style.
Is Penshift a free Grammarly alternative?
Yes. Penshift's free tier covers grammar checks, plus rewrite tools (humaniser, paraphraser, summariser, translator), AI Detector, and plagiarism. No card needed. Grammarly's free tier is grammar-only with limited corrections; the rewriting tools, tone suggestions, and plagiarism checker sit behind Premium.
What does Grammarly do better than Penshift?
Browser-everywhere coverage is Grammarly's biggest moat. Penshift currently ships a Chrome extension; Grammarly works in Chrome, Edge, Firefox, Safari, Word, Outlook, and desktop apps. If your workflow is deeply tied to Word or Outlook, Grammarly's native add-in is hard to replace. Grammarly also has a more mature business-tier with team management.
Can I use Penshift instead of Grammarly Business?
Penshift doesn't currently ship multi-seat business plans (it's planned, not live). For solo writers, freelancers, and small teams happy to share via account-level access, Penshift works fine. If you need SAML SSO, admin dashboards, and centralised billing across 50+ writers, stay on Grammarly Business until Penshift's team plans land.
How much will I save by switching to Penshift?
On annual billing, $48/year ($95.88 versus $144). On monthly billing, $180/year ($179.88 versus $360). Plus Penshift Pro includes the humaniser, paraphraser, AI detector, plagiarism, grammar, summariser, and translator in one quota; Grammarly Premium gets you Grammarly's tone and rewrite suggestions plus plagiarism, but not a dedicated humaniser or summariser.
Does Penshift work in Google Docs?
Yes, via the Penshift Chrome extension. Right-click any selection in Google Docs to humanise, paraphrase, run the AI Detector, or fix grammar without leaving the tab. Same monthly quota as the web app.
Try Penshift free.
See if rewriting-first fits.
5,000 words a month, no card, no signup wall. The Humanizer, Paraphraser, AI Detector, Plagiarism Check, Grammar, Summariser and Translator are all unlocked on Free.