# Grammarly vs ShieldLabs

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. ShieldLabs records 2,059 monthly visits with +42.4% growth and Freemium pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [ShieldLabs](https://openaitools.app/tool/shieldlabs) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://shieldlabs.ai |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI API, AI Developer Tools |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 58,867,412 | 2,059 |
| MoM Growth Rate | -1.5% | +42.4% |
| Primary Market | United States | United States |
| Direct Visits | 25,398,749 | 634 |
| Review Score | 4.4 | 4.2 |
| Saved Count | 74 | 0 |
| Supported Platforms | Website | Website |

## Grammarly

Grammarly is the world's most widely deployed AI writing and communication platform, trusted by more than 40 million daily users and 50,000 organizations including Atlassian, Databricks, and Zoom. Operating as a persistent overlay across over 500,000 web applications, desktop programs (Windows and macOS), Microsoft Office, Google Docs, and iOS/Android keyboards, Grammarly analyzes text in real time to eliminate grammatical errors, streamline wordy phrasing, and calibrate tone to match the writer's intent. Following its corporate evolution under the Superhuman Platform umbrella alongside Superhuman Mail and Coda, Grammarly has expanded from a personal proofreader into an enterprise-grade proactive AI communication suite.

In 2026, Grammarly goes well beyond red-underline spellchecking with a suite of specialized AI Agents and document integrity tools. Writers can invoke purpose-built agents—including AI Grader, Citation Finder, Reader Reactions, and Paraphraser—alongside generative AI drafting directly inline where they work. To address academic and professional transparency in the generative AI era, Grammarly offers built-in Plagiarism Detection, an AI Detector, and Grammarly Authorship, which tracks how a document was constructed by automatically categorizing text as human-typed, pasted from external sources, or generated/modified with AI. For teams, Grammarly enforces organizational consistency through custom Style Guides, Brand Tones, reusable Snippets, and Knowledge Share.

Grammarly simplified its subscription structure by consolidating its legacy individual 'Premium' and team 'Business' offerings into a single unified tier: Grammarly Pro. The Free plan ($0/month) covers essential spelling, punctuation, basic tone visibility, and 100 generative AI prompts per month. Grammarly Pro is priced at $12/member/month when billed annually ($144/year) or $30/member/month when billed monthly ($60 quarterly), unlocking unlimited personalized fluency suggestions, full-sentence rewrites, tone adjustment, citation formatting, plagiarism and AI detection, 1 team style guide, and 2,000 generative AI prompts per member each month. Large organizations opt for Grammarly Enterprise (available with Superhuman Go) for unlimited AI prompts, SAML SSO, SCIM provisioning, Data Loss Prevention (DLP), and Bring Your Own Key (BYOK) encryption.

**Pricing & Plans:** Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security.

- **Ubiquitous Inline Rewriting & Tone Calibration:** Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
- **Specialized AI Agents (AI Grader, Citation Finder & Reader Reactions):** Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
- **Grammarly Authorship, AI Detector & Plagiarism Checker:** Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
- **Team Style Guides, Brand Tones & Knowledge Share:** Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.
- **Enterprise Security, DLP & Superhuman Platform Governance:** Protects organizational data with SOC 2 Type 2 attestation, SAML SSO, SCIM lifecycle management, Confidential Mode, Data Loss Prevention controls, Audit Logs API, and customer-managed BYOK encryption.

**Strengths:** Frictionless cross-platform integration works inside virtually every browser, desktop app, email client, and mobile OS without copy-pasting into a separate chatbot.; Consolidating Premium and Business into Grammarly Pro ($12/member/month annual) gives individuals and small teams access to style guides, analytics, and plagiarism/AI detection in one plan.; Grammarly Authorship provides a constructive, transparent audit trail for students and writers to demonstrate human writing integrity alongside responsible AI editing.; Mature enterprise security posture featuring BYOK encryption, Data Loss Prevention, and granular application/domain blocklists.

**Limitations:** Month-to-month billing on Grammarly Pro is steep at $30/member/month compared to the $12/member/month annual commitment ($144 billed upfront).; Core writing intelligence and style rules remain primarily optimized for English dialects (US, UK, Canadian, Australian, Indian) rather than native multilingual grammar checking.; Aggressive inline underlines and pop-up agent cards can feel visually intrusive in dense technical documents or code-heavy web editors unless muted per domain.

[Profile (Markdown)](https://openaitools.app/tool/grammarly.md)

## ShieldLabs

ShieldLabs is a fraud detection and prevention platform built for teams that run signups, logins, subscriptions or paid traffic on their own product. Instead of asking you to train a fraud model, it ships ready-made detections: device and browser fingerprints, IP and network intelligence, named risk signals, and High-Risk Events such as multi-accounting, account sharing, impossible travel and account takeover. Each visit gets a Risk Score from 0 to 100 classified as trusted, suspicious or dangerous, with the individual signals listed behind that score.

The core idea is identification before detection. ShieldLabs recognizes a returning visitor even if they clear cookies, browse in incognito or switch IP addresses, and links accounts that use different email addresses but belong to the same person or device. That linking step is what makes account-level abuse detectable without any fraud model training. On top of that sit masking detections for VPNs, proxies, Tor, private relays, datacenters, anti-detect browsers and spoofed locations, plus automation and headless-browser signals, with AI crawler traffic separated from abusive bots.

For analytics-minded teams there is traffic quality scoring: one score for the whole traffic stream plus quality breakdowns by source, channel, referrer and UTM campaign, which helps separate real acquisition results from bot-filled ones. Integration is a JavaScript snippet plus a REST API, webhooks and SDKs across common stacks, and the same free tier exposes the full detection stack with a monthly identification allowance.

**Pricing & Plans:** Freemium with usage-based paid tiers. The free plan includes 5,000 identifications and one domain with the full detection stack. Paid plans are sold as monthly identification volume with hard caps and no overage charges: Starter is $99/month for 25,000 identifications, Growth is $399/month for 150,000 and Scale is $999/month for 500,000. Annual billing saves about 20%.

- **Visitor and device identification:** Recognizes returning visitors across cleared cookies, incognito sessions and changed IP addresses, and links multiple accounts that trace back to the same person or device.
- **Ready-made High-Risk Events:** Flags multi-accounting, account sharing, account takeover and impossible travel out of the box, with a confidence value per event and no fraud model training required.
- **Masking and bot detection:** Names the risk signals behind each result: VPN, proxy, Tor, private relay, datacenter, anti-detect browser, incognito mode, JavaScript disabled, OS and timezone mismatch, browser automation and AI bots.
- **Risk scoring and traffic quality:** Scores every visit 0–100 and classifies it as trusted, suspicious or dangerous, then aggregates a single traffic-quality score with breakdowns by channel, referrer and UTM campaign.
- **API, webhooks and cluster graph:** Ships a single REST API, webhooks, a dashboard explorer and a cluster graph that shows connected accounts and the evidence behind an abuse decision, with SDKs for JavaScript, React, Next.js, Node, Python, Go, PHP, Java and .NET.

**Strengths:** Full detection stack on every plan, including the free tier, so nothing critical is locked behind an enterprise quote; Identification-led approach catches multi-accounting even when emails and IP addresses change; Transparent usage-based pricing with hard caps and no overage surprises; Named risk signals and event confidence make manual review evidence-based rather than guesswork

**Limitations:** Free tier stops returning results once the 5,000 monthly identifications are used, returning HTTP 402 until you upgrade; Identification history is limited to 90 days on every plan; Enterprise-scale volumes above 500,000 identifications per month require contacting sales rather than self-serve

[Profile (Markdown)](https://openaitools.app/tool/shieldlabs.md)

## Frequently Asked Questions

### How do Grammarly and ShieldLabs compare in monthly traffic?

Grammarly has 58,867,412 monthly visits, while ShieldLabs has 2,059. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Grammarly has a month-over-month growth rate of -1.5%; ShieldLabs has +42.4%.

### How does pricing compare?

Grammarly: Freemium. Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security. ShieldLabs: Freemium. Freemium with usage-based paid tiers. The free plan includes 5,000 identifications and one domain with the full detection stack. Paid plans are sold as monthly identification volume with hard caps and no overage charges: Starter is $99/month for 25,000 identifications, Growth is $399/month for 150,000 and Scale is $999/month for 500,000. Annual billing saves about 20%.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker. | [.md](https://openaitools.app/tool/deepl.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features. | [.md](https://openaitools.app/tool/languagetool.md) |
| 4 | [hCaptcha](https://openaitools.app/tool/hcaptcha-com) | 5,446,045 | +18.7% | Freemium, Free Trial, Contact for Pricing, Free | Privacy-first bot detection and fraud prevention for the web | [.md](https://openaitools.app/tool/hcaptcha-com.md) |
| 5 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly. | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 6 | [Roboflow](https://openaitools.app/tool/roboflow) | 1,431,204 | +6.6% | Freemium, Contact for Pricing | Build, train, and deploy computer vision for the physical world | [.md](https://openaitools.app/tool/roboflow.md) |
| 7 | [Paperpal](https://openaitools.app/tool/paperpal) | 1,111,641 | +1.7% | Freemium | AI academic writing assistant that edits, cites, and checks your manuscript right where you write | [.md](https://openaitools.app/tool/paperpal.md) |
| 8 | [CapMonster Cloud](https://openaitools.app/tool/capmonster-cloud) | 862,340 | +36.3% | Paid | AI-powered CAPTCHA solving API built for scale | [.md](https://openaitools.app/tool/capmonster-cloud.md) |
| 9 | [Hemingway Editor](https://openaitools.app/tool/hemingway-editor) | 605,169 | -8.6% | Free Trial, Paid, Free | Highlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support. | [.md](https://openaitools.app/tool/hemingway-editor.md) |
| 10 | [AI or Not](https://openaitools.app/tool/ai-or-not) | 375,863 | +12.3% | Freemium, Contact for Pricing | Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes | [.md](https://openaitools.app/tool/ai-or-not.md) |

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Source: https://openaitools.app/compare/grammarly-vs-shieldlabs

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