# Grammarly vs Postly

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Postly records 73,916 monthly visits with +17.9% growth and Freemium, Paid pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [Postly](https://openaitools.app/tool/postly) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://postly.ai |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI Social Media, AI Ad Generator, AI Social Media Post Generator |
| Pricing Model | Freemium | Freemium, Paid |
| Monthly Visits | 58,867,412 | 73,916 |
| MoM Growth Rate | -1.5% | +17.9% |
| Primary Market | United States | United States |
| Direct Visits | 25,398,749 | 47,990 |
| Review Score | 4.4 | 4.2 |
| Saved Count | 74 | 6 |
| 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)

## Postly

Postly positions itself as a command center for social publishing: one account to plan, create, approve and schedule posts across the channels a team already uses. Its distinctive angle is agentic operation. You can connect a compatible external AI assistant — the site demonstrates a ChatGPT workflow — brief it on a launch, and receive channel-specific drafts back for review. You keep control of what goes live: content, channels and posting times are all approved before scheduling, and results such as clicks and engagement feed into the next campaign.

For teams that would rather stay in one place, Postly also works standalone with its editor, calendar and built-in AI writing tools. Publishing covers a broad set of destinations including Instagram, Facebook, LinkedIn, TikTok, YouTube, Pinterest, X, Threads, Bluesky, Google Business Profile, Telegram and Slack, subject to plan and connected-account permissions. Approval workflows make it practical for agencies handling multiple client accounts, and analytics show what performed.

Beyond owned channels, Postly adds distribution through people. Brands and publishers can browse creator profiles, compare audience stats and rates, brief a creator and review what goes live, while creators can build a private media kit, set rates and take on sponsored work. In the Creator Campaigns public beta, eligible paid campaigns carry a 7% Postly commission with creators keeping their full agreed fee. Pricing is a publishing subscription with stackable add-ons, and a 14-day Publishing Pro trial is available with a payment card.

**Pricing & Plans:** Freemium with a Publishing Pro subscription paid monthly, plus stackable add-ons such as Campaign Intelligence, AI Studio, API Access and a Custom Telegram Bot. A 14-day Publishing Pro trial is offered when you add a payment card; the plan renews unless cancelled.

- **Agentic AI publishing:** Connect a compatible AI agent, brief it on a campaign, then review and approve channel-specific drafts before Postly schedules them.
- **Multi-platform scheduling:** Plan and publish to Instagram, Facebook, LinkedIn, TikTok, YouTube, Pinterest, X, Threads, Bluesky, Google Business Profile, Telegram, Slack and other supported destinations.
- **Approve-first workflow:** Content, channels and posting times are confirmed by a human before anything goes live, which suits agencies with client approvals.
- **Influencer marketing and creator program:** Find creators by niche and audience stats, agree on a brief and rate, or join as a creator to take sponsored campaigns.
- **Add-on analytics and API:** Optional Campaign Intelligence analytics, AI Studio, API access for programmatic publishing and a custom Telegram bot can be stacked on the subscription.

**Strengths:** Agent-first design lets an AI assistant do the drafting while a human keeps final approval; Supports a wide range of social destinations from one calendar; Approval workflow and client management fit agency use; Creator marketplace and creator program extend reach beyond owned channels

**Limitations:** Feature availability varies by plan, connected account and platform permissions; The creator campaigns marketplace is still in public beta; Best value depends on bundling add-ons, which can complicate cost planning

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

## Frequently Asked Questions

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

Grammarly has 58,867,412 monthly visits, while Postly has 73,916. 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%; Postly has +17.9%.

### 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. Postly: Freemium, Paid. Freemium with a Publishing Pro subscription paid monthly, plus stackable add-ons such as Campaign Intelligence, AI Studio, API Access and a Custom Telegram Bot. A 14-day Publishing Pro trial is offered when you add a payment card; the plan renews unless cancelled.

## 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 | [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) |
| 5 | [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) |
| 6 | [Planable](https://openaitools.app/tool/planable) | 701,915 | -7.7% | Freemium | Plan, approve and schedule social content with your whole team in one place | [.md](https://openaitools.app/tool/planable.md) |
| 7 | [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) |
| 8 | [Postiz](https://openaitools.app/tool/postiz) | 524,221 | +14.2% | Free Trial, Paid, Contact for Pricing | Agentic social media scheduling for 30+ channels | [.md](https://openaitools.app/tool/postiz.md) |
| 9 | [Wordtune](https://openaitools.app/tool/wordtune) | 368,771 | -5.8% | Freemium, Free Trial | Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides. | [.md](https://openaitools.app/tool/wordtune.md) |
| 10 | [Circleboom](https://openaitools.app/tool/circleboom-com) | 336,939 | -1.3% | Freemium | Social media management, scheduling and X/Twitter tools in one place | [.md](https://openaitools.app/tool/circleboom-com.md) |

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

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