Updated May 16, 2026 · ~6 min read · Honest comparison, not a takedown
The 30-second answer. Grammarly is the most mature writing assistant on the market — a real-time grammar, clarity, tone, and plagiarism checker that lives in every text field you touch, across browser, desktop, mobile, and Office. TinyTools is a free, no-signup collection of single-purpose pages. Our AI text humanizer rewrites AI-flavored prose into something that reads like a person wrote it, and the AI text detector tells you how AI-sounding a draft is before you send it. If you write every day in many places and want one tool sitting on top of all of it, Grammarly earns its subscription. If you want to clean up one piece of writing right now, in a browser tab, without an account, TinyTools is the lighter pick — and they actually compose well together.
What each one actually is
Grammarly started in 2009 as a grammar checker and has grown into a full writing platform. The core product sits as an extension in your browser, IDE, and email client, plus native desktop apps for Windows and macOS, an iOS/Android keyboard, and add-ins for Word, Google Docs, and Outlook. It checks spelling, grammar, punctuation, clarity, tone, engagement, and delivery in real time, offers an AI writing assistant (drafts, rewrites, replies, summaries), runs a plagiarism scan against billions of web pages and academic sources, and supports style guides and brand voice on the paid plans. Free covers the basics; Pro and Business add the generative AI features, advanced suggestions, and team controls.
TinyTools is a free, browser-only toolkit of focused pages. There is no single "TinyTools writing assistant" the way Grammarly is — instead, the writing-adjacent tools are separate: an AI text humanizer that takes ChatGPT/Claude/Gemini output and rewrites it to sound less templated, an AI text detector that estimates how AI-generated a passage reads, a cover letter generator, and a resume tailorer. No account, no caps, nothing stored on a server-side profile. You open the page, paste, and download.
Side-by-side feature comparison
Feature
TinyTools
Grammarly
Price (core features)
Free, forever
Free tier + Pro from $12/mo annual
Account / signup required
No
Yes (email)
Real-time grammar & spell check
No (paste-and-rewrite, not live)
Yes, everywhere you type
Browser extension
None
Chrome, Edge, Firefox, Safari
Desktop / Office / mobile apps
Web only
Windows, macOS, iOS, Android, Word, Docs
Tone & clarity suggestions
Implicit in the rewrite
Explicit, sentence-by-sentence
AI-text humanizer
Dedicated tool
Possible via "rewrite" prompts
AI-text detector
Yes, free
Yes (Pro / Authorship)
Plagiarism check
No
Yes (Pro)
Generative AI (drafts, replies, summaries)
Single-shot rewrites
Multi-turn AI assistant (Pro)
Brand voice / style guide
No
Yes (Business)
Works inside Gmail, Slack, LinkedIn
No
Yes, via extension
Text stays on your device
Processed in-session, not stored
Uploaded and analyzed server-side
Offline use
No
Limited offline grammar on desktop
Language support
English-focused
English (US, UK, AU, CA, IN)
Pricing comparison
Pricing is one of the clearest differences. Grammarly's free tier is genuinely useful — spelling, grammar, and basic punctuation work without paying — but most of the features people actually associate with Grammarly (tone, clarity, full sentence rewrites, plagiarism, generative AI) sit behind Pro or Business.
Plan
TinyTools
Grammarly (2026)
Free
All tools, unlimited use
Basic grammar, spelling, punctuation; limited AI prompts
Monthly
n/a
Pro: $30/mo
Quarterly
n/a
Pro: ~$20/mo (billed every 3 months)
Annual
n/a
Pro: $12/mo (billed annually, ~$144/yr)
Business
n/a
From $15/user/mo (annual)
Enterprise
n/a
Custom, contact sales
Refund policy
Nothing to refund
Limited refunds for individual plans
Grammarly's pricing has shifted multiple times in the last few years, and the Business tier was rebranded around AI features in 2025. The figures above reflect publicly listed plans as of mid-2026 and may change — always check their pricing page before subscribing.
When Grammarly is the better choice
If we're being honest about a product with sixteen years of refinement: Grammarly does several things TinyTools doesn't even attempt. Pick Grammarly when:
You write in many places every day. Gmail, Slack, LinkedIn, Notion, Word, Docs, Outlook — Grammarly's value compounds the more text fields you live in. A paste-and-rewrite page can't help you while you're typing a reply in your inbox.
You want live feedback while writing. Real-time underlines, tone signals, and one-click accepts beat a copy-paste loop for most workflows. That's what Grammarly was built for and it's still their core strength.
You need plagiarism detection. Students, editors, and content teams need a real plagiarism scanner. TinyTools doesn't ship one. Grammarly Pro's check against web and academic sources is one of the more reliable consumer-grade options.
You need brand voice or a team style guide. Grammarly Business lets you define preferred terms, banned words, and a house voice that the assistant enforces across the team. There is no equivalent in TinyTools.
You want a generative AI assistant inside the editor. "Draft a reply," "shorten this," "make it more formal" — Grammarly's AI is integrated into the text field. TinyTools rewrites once per paste; that's not the same product shape.
You're on Word, Outlook, or Google Docs. The native add-ins matter. A browser tab can't reach into your Word document the way Grammarly's plugin can.
When TinyTools is the better choice
The honest case for TinyTools is narrower but real:
You have one paragraph to clean up, today. A LinkedIn post, a cold email, an "About" section. You don't need an extension installed and a trial started — you need the text fixed and pasted back. Open the humanizer, paste, copy the result, close the tab.
You're trying to de-AI obviously AI-written prose. Grammarly will polish grammar but won't reliably strip the rhythm and connective tissue that make a draft read like ChatGPT. The TinyTools humanizer is built for exactly that one job.
You don't want another subscription on your card. $12/mo is reasonable if you live in Grammarly. It's a lot for someone who writes seriously a few times a week and has been getting by with built-in spellcheck.
You care about not uploading your text. Sensitive drafts — performance reviews, legal language, internal memos — are often things people don't want sitting in a SaaS account history. TinyTools processes in-session and doesn't keep your text.
You're checking your own draft for AI-detection risk. Before submitting school work, blog posts, or freelance writing, the free AI text detector gives you a fast sanity check without burning a Grammarly trial.
You only need help occasionally. A subscription for three documents a month doesn't pencil out.
Three concrete use cases
1. Freelance writer with five clients a week
Recommendation: Grammarly Pro, probably the annual plan. The volume justifies the price, the browser extension covers every CMS you log into, and the plagiarism check is genuinely useful when you're sourcing research. TinyTools is a fine occasional supplement for the "this draft reads too much like AI" pass.
2. PM writing one quarterly review and a few Slack updates a week
Recommendation: TinyTools, with Grammarly's free tier as a passive safety net in the browser. You don't write enough to need the Pro features. Use the humanizer when a Notion doc reads too templated, and the free Grammarly underline for typos in Slack.
3. Student finishing a thesis chapter
Recommendation: Grammarly Pro, at least for the month you're finishing the chapter. The plagiarism check, citation-aware suggestions, and tone consistency across long documents are exactly what this workflow needs. TinyTools doesn't replace any of that — but a quick humanizer pass on AI-generated literature-review summaries is a reasonable adjunct.
Switching costs and lock-in
This is a quiet advantage of stateless tools. TinyTools has nothing to leave — no document history, no saved style preferences, no synced settings. Every output is a final file in your clipboard or on your machine. Grammarly's lock-in is mild but real: your personal dictionary, tone preferences, brand voice, and document history live inside the account. Cancel and you keep the writing you've already exported, but the assistant resets. That's a reasonable trade for what they provide, just worth knowing before you commit to an annual plan.
A note on AI detection and humanization
One worth-flagging point: Grammarly has its own AI-text detector and an "Authorship" feature aimed at proving a human wrote a given document. TinyTools' detector and humanizer are deliberately simpler and free — they give you a signal, not a verdict. No detector is perfect, and no humanizer guarantees a piece will read as fully human to every reader or every other detector. Treat both as drafting aids, not as cheating tools or as legal proof of authorship.
Verdict
Grammarly is the better product if you want a real writing assistant installed everywhere you type, with plagiarism, brand voice, and a generative AI sidekick — and you're willing to pay $12–$30 a month for that. TinyTools is the better tool if you want to humanize, detect, or tailor one piece of writing right now, for free, without an account. They're not really substitutes; they're different shapes of help, and a lot of people end up using the free TinyTools pages alongside a Grammarly subscription rather than instead of it.
If you came here looking for a complete Grammarly replacement, the truthful answer is that one doesn't exist on TinyTools — we don't do real-time grammar, browser-wide checking, or plagiarism, and we'd rather say that than pretend otherwise. If you came looking for a free, no-signup way to humanize AI-flavored prose or sanity-check a draft, that's exactly what we're built for.