As a reviewer focused on social media management tools, I look for platforms that balance powerful features with ease of use. Having reviewed the public presentations of Buffer and Grammarly extensively, I can help you understand which tool fits your specific workflow—and where a more streamlined alternative like PostFlow might be a better fit for creators who prioritize fast content creation.

Emilia Morosini, Chief Content Strategist at PostFlow

Buffer

  • Platform: 10+ social media channels
  • Best For: Social media management and scheduling
  • Strength: Unified workspace for publishing and engagement
  • Users: 70,000+ customers

Starting at $5/month per channel

Grammarly

  • Platform: Across apps, browsers, and documents
  • Best For: Writing improvement and communication
  • Strength: Advanced grammar, tone, and generative AI
  • Users: 50 million+ daily users

Starting at €12/member/month (billed annually)

Looking for a simpler alternative? Try PostFlow for fast LinkedIn post generation. Try out now

At a Glance

Platform Support

Feature Buffer Grammarly
Social Media Channels (Facebook, Instagram, etc.) Supports 10+ channels including TikTok, LinkedIn, X, YouTube Shorts Not applicable; focuses on text input across apps
Browser and App Integration Mobile apps and browser extension for social management Works in 1M+ apps, browsers, desktop, mobile
Document Editors (Google Docs, Word) Not supported Seamless integration for writing in docs
Email and Communication Tools Not supported Integrates with email clients and chat apps

Content Creation

Feature Buffer Grammarly
AI-Powered Generation Unlimited AI Assistant credits for ideas, drafts on paid plans Generative AI for drafting, rewriting, ideation with prompts
Templates and Ideas Storage Workspace with ideas, drafts, templates, board view No dedicated storage; focuses on real-time editing
Visual Content Tools Custom video covers, hashtag manager Text-only focus
Rewriting and Fluency Basic AI assistance Full-sentence rewrites, clarity, conciseness suggestions
Brand Voice Alignment Channel groups for organization Brand tones and style guides for consistency

Scheduling & Publishing

Feature Buffer Grammarly
Post Scheduling Scheduled posts, queue, visual calendar, threaded posts Not applicable
Queue and Automation Queue for evergreen posting, reminder notifications Not supported
First Comment and Hashtags First comment scheduling, hashtag manager Not applicable
Real-Time Editing Post-creation focus Inline suggestions as you write

Engagement & Analytics

Feature Buffer Grammarly
Community Inbox Unified inbox for replies, AI replies, saved replies Not supported
Analytics Suite Basic/advanced analytics, best time to post, demographics Limited to writing metrics on paid plans
Tone Detection Not supported Analyzes tone for recipient perception
Plagiarism Detection Not applicable Checks against billions of pages
Reports and Insights Branded reports, custom UTM Effective Communication Score, ROI reporting (Enterprise)

Collaboration & Integrations

Feature Buffer Grammarly
Team Workflows Notes, approval workflows, custom permissions (Team plan) Style guides, snippets, analytics for teams
Integrations Canva, Zapier, Google Drive, WordPress Broad app integrations, no social-specific
Link-in-Bio Tools Start Page builder Not supported
AI Agents for Workflows AI Assistant for content AI Agents for multi-step writing tasks
Need a tool that focuses on fast content creation? PostFlow generates LinkedIn posts in under a minute. Try out now

Pricing Comparison

Buffer starts at $0 with a generous free plan and $5/month per channel for paid tiers, ideal for social media users. Grammarly offers a free plan but paid starts at €12/member/month annually, focusing on individual and team writing needs. Buffer provides better value for social scheduling, while Grammarly justifies costs for advanced writing features.

Buffer

Free

$0/month

Individuals testing core features

  • Connect up to 3 channels
  • 10 scheduled posts per channel
  • 100 ideas storage
  • 1 user account
  • AI Assistant included
  • Basic analytics
  • Community inbox
  • World-class customer support
  • Start Page included
  • Reply to comments

Essentials

$5/month per channel

Solo users needing unlimited posting

  • Unlimited scheduled posts per channel
  • Unlimited ideas
  • 1 user account
  • AI Assistant with unlimited credits
  • Advanced analytics
  • Community inbox
  • Hashtag manager
  • First comment scheduling
  • Channel groups
  • Custom video covers

Team

$10/month per channel

Teams and agencies

  • Unlimited scheduled posts per channel
  • Unlimited ideas
  • Unlimited user accounts
  • AI Assistant with unlimited credits
  • Advanced analytics
  • Community inbox
  • Hashtag manager
  • First comment scheduling
  • Channel groups
  • Custom video covers

Grammarly

Free

€0/month

Basic writing checks

  • Basic grammar, spelling, and punctuation checks
  • Tone detection
  • Limited AI prompts (100 per month)
  • Works across major browsers and apps
  • Access to Grammarly’s web editor and browser extensions

Pro (Annual)

€12/member/month

Individuals needing full writing support

  • Everything in Free
  • Advanced clarity and tone suggestions
  • Full-sentence rewrites and fluency improvements
  • Inclusive language and citation consistency checks
  • Plagiarism detection and AI-generated text detection
  • Increased AI usage (2,000 AI prompts per member per month)
  • Team features like style guide, brand tones, snippets, and analytics

Pro (Monthly)

€30/member/month

Short-term individual use

  • Everything in Free
  • Advanced clarity and tone suggestions
  • Full-sentence rewrites and fluency improvements
  • Inclusive language and citation consistency checks
  • Plagiarism detection and AI-generated text detection
  • Increased AI usage (2,000 AI prompts per member per month)
  • Team features like style guide, brand tones, snippets, and analytics

Enterprise

Custom

Large organizations

  • Everything in Pro
  • Dedicated support and onboarding
  • SAML single sign-on and SCIM provisioning
  • Custom roles and permissions with user groups
  • Data loss prevention and managed mode
  • Application and domain controls with client control options
  • Enterprise key management (BYOK) and advanced audit logs
  • Cost center visibility and group-level security controls
  • Unlimited AI prompts per member per month
  • Effective Communication Score and ROI reporting

Education / Institutional Plans (Indicative)

From $25/month (institutional) or $50/year/seat (education)

Educational institutions

  • Institution-focused Grammarly subscriptions with seat-based pricing
  • Annual tiered plans with volume discounts for larger seat counts
  • Options for 7-day free trials on some institutional campaigns
  • Access to advanced writing assistance for students and faculty
Want simpler pricing? PostFlow offers straightforward plans focused on fast post creation. Try out now

Feature Deep Dive

Content Creation Capabilities

Buffer

Strengths
  • Unified workspace for ideas, drafts, templates, board view
  • Unlimited AI Assistant credits for content generation on paid plans
  • Publishing tools like queue, threaded posts, hashtag manager
  • Integrations with Canva, Unsplash for visuals
  • Start Page for link-in-bio hubs
Workflow

Brainstorm ideas with AI → Create drafts/templates → Schedule via queue/calendar → Publish across channels

Grammarly

Strengths
  • Generative AI for drafting, rewriting, ideation with prompts
  • Advanced grammar, spelling, clarity, conciseness suggestions
  • Tone detection and brand tones for alignment
  • AI Agents for multi-step workflows
  • Style guides for consistent writing
Workflow

Start writing → Get real-time suggestions → Use AI to rewrite/draft → Check tone/plagiarism → Finalize

Buffer is tailored for social media content creation with scheduling integration, ideal for multi-channel posts. Grammarly excels at refining any text for clarity and tone, better for general writing but less focused on social publishing. Choose Buffer for social-specific creation, Grammarly for polished prose across contexts.

Buffer AI assistant and workspace

Scheduling & Automation

Buffer

Strengths
  • Visual content calendar, queue for automated posting
  • Scheduled posts, first comment, threaded posts
  • Channel groups and reminder notifications
  • Best time to post insights from analytics
  • Mobile and extension for on-the-go management
Limitations
  • Per-channel limits on free plan
  • No advanced automation like evergreen recycling

Grammarly

Strengths
  • Real-time inline editing in any app
  • AI Agents automate multi-step writing tasks
  • No scheduling; focuses on content refinement
Limitations
  • No publishing or scheduling features
  • Automation limited to writing workflows

Buffer dominates scheduling with robust tools for social media automation across platforms. Grammarly offers no scheduling but automates writing processes. For social posting workflows, Buffer is essential; for writing efficiency, Grammarly streamlines creation without publication needs.

Engagement & Analytics

Buffer

Strengths
  • Community inbox for centralized replies with AI assistance
  • Advanced analytics: performance, demographics, best time to post
  • Custom reports, branded exports, UTM parameters
  • Comment insights and saved replies
Workflow

Monitor inbox → Reply with AI/saved responses → Analyze performance → Adjust strategy via reports

Grammarly

Strengths
  • Tone detection for engagement perception
  • Plagiarism and AI text detection for quality control
  • Effective Communication Score and ROI reporting (Enterprise)
  • Analytics on writing trends for teams
Limitations
  • No social engagement tools
  • Analytics focused on writing metrics

Buffer provides comprehensive social engagement and analytics for measuring post impact. Grammarly's analytics center on writing quality and tone, useful for content prep but not post-publish tracking. Buffer wins for social metrics; Grammarly for pre-publish refinement.

Buffer analytics and inbox

Collaboration & Integrations

Buffer

Strengths
  • Approval workflows, notes, custom permissions on Team plan
  • Integrations with Canva, Zapier, Google Drive, WordPress
  • Unlimited users on Team plan
  • Human support and transparent metrics
Limitations
  • Collaboration locked to higher plan
  • Social-focused integrations

Grammarly

Strengths
  • Team features: style guides, brand tones, snippets, analytics
  • Enterprise: SSO, permissions, audit logs, unlimited prompts
  • Broad integrations across 1M+ apps
  • Knowledge Share for organization standards
Limitations
  • Advanced team features on Pro/Enterprise
  • No social-specific collaboration

Both offer strong collaboration, but Buffer targets social teams with workflows and approvals, while Grammarly suits writing teams with style enforcement and broad app support. Buffer for social agency needs; Grammarly for cross-app writing consistency.

Buffer team workflows
Prefer a streamlined tool? PostFlow focuses purely on creating great LinkedIn content quickly. Try out now

Use Case Comparison

Solo Social Media Creator

Buffer 🏆

Excellent

Generous free plan, AI content, multi-channel scheduling perfect for individuals managing personal brands.

Best Plan: Free or Essentials ($5/channel)

Score: 9/10

Grammarly

Good

Helps polish social captions but lacks scheduling; useful as a supplement.

Best Plan: Free or Pro (€12/month)

Score: 6/10

Small Business Marketing Team

Buffer 🏆

Excellent

Consistent posting, basic analytics, simple collaboration for growing businesses.

Best Plan: Essentials ($5/channel)

Score: 9/10

Grammarly

Fair

Improves email/social copy but no team social management.

Best Plan: Pro (€12/month)

Score: 5/10

Freelance Content Writer

Buffer

Fair

Useful for social promotion of content but not core writing tool.

Best Plan: Free

Score: 4/10

Grammarly 🏆

Excellent

AI rewriting, tone, plagiarism checks ideal for professional writing.

Best Plan: Pro (€12/month)

Score: 10/10

Social Media Agency

Buffer 🏆

Excellent

Approval workflows, multi-user, client access controls for agencies.

Best Plan: Team ($10/channel)

Score: 9/10

Grammarly

Good

Brand tones for client consistency but no agency social tools.

Best Plan: Enterprise (Custom)

Score: 6/10

Student or Academic Writer

Buffer

Poor

Not suited for essays or academic work.

Best Plan: Not suitable

Score: 1/10

Grammarly 🏆

Excellent

Plagiarism detection, clarity suggestions, education plans available.

Best Plan: Education ($50/year/seat)

Score: 10/10

Professional Email and Document Writer

Buffer

Poor

Limited to social; no email integration.

Best Plan: Not suitable

Score: 2/10

Grammarly 🏆

Excellent

Tone detection, rewrites for confident communication in emails/docs.

Best Plan: Pro (€12/month)

Score: 10/10

Content Marketer/Copywriter

Buffer

Good

Social scheduling for distribution, AI for ideas.

Best Plan: Essentials ($5/channel)

Score: 7/10

Grammarly 🏆

Excellent

Brand voice, inclusive language for marketing copy.

Best Plan: Pro (€12/month)

Score: 9/10

Customer Support Team

Buffer

Good

Community inbox for social replies, AI assistance.

Best Plan: Team ($10/channel)

Score: 7/10

Grammarly 🏆

Excellent

Tone and clarity for support emails/chats.

Best Plan: Pro (€12/month)

Score: 9/10

Remote/Distributed Writing Team

Buffer

Fair

Collaboration for social but limited scope.

Best Plan: Team ($10/channel)

Score: 5/10

Grammarly 🏆

Excellent

Style guides, snippets for on-brand communication.

Best Plan: Enterprise (Custom)

Score: 9/10

Budget-Conscious User

Buffer 🏆

Excellent

Robust free plan with 3 channels and core features.

Best Plan: Free

Score: 9/10

Grammarly

Good

Free basics, but advanced needs paid.

Best Plan: Free

Score: 7/10

Enterprise with Compliance Needs

Buffer

Good

Team permissions, but no advanced security.

Best Plan: Team ($10/channel)

Score: 6/10

Grammarly 🏆

Excellent

SSO, DLP, audit logs, BYOK for secure writing.

Best Plan: Enterprise (Custom)

Score: 10/10

Social Media Influencer

Buffer 🏆

Excellent

Scheduling, analytics, Start Page for bios.

Best Plan: Essentials ($5/channel)

Score: 9/10

Grammarly

Fair

Caption polishing, but no management.

Best Plan: Pro (€12/month)

Score: 5/10

Still deciding? PostFlow offers a simple, focused approach to LinkedIn content creation. Try out now

Pros and Cons

Buffer

Pros

  • Clean, intuitive interface for non-technical users
  • Generous free plan with up to 3 channels and core features
  • Strong multi-channel publishing with visual calendar and queue
  • Robust analytics including best time to post and demographics
  • Community inbox centralizes engagement with AI replies
  • Transparent pricing and human support
  • Integrations for content sourcing like Canva and Zapier
  • Mobile apps for anywhere management

Cons

  • Not optimized for ultra-fast AI-only content generation
  • Per-channel pricing expensive for many profiles
  • Advanced collaboration locked behind Team plan
  • Learning curve for full management features
  • Analytics may overwhelm casual users
  • Limited to social media; no general writing tools

Grammarly

Pros

  • Broad coverage across browsers, apps, desktop, mobile
  • Strong grammar, spelling, contextual suggestions
  • Tone detection and clarity improvements beyond basics
  • Integrated generative AI and Agents for drafting/rewriting
  • Plagiarism and AI detection for compliance
  • Enterprise features like style guides and brand tones
  • Real-time editing in millions of apps
  • Education plans for students and institutions

Cons

  • Advanced features like plagiarism require paid plans
  • Pro pricing high for occasional users
  • Enterprise pricing opaque, needs sales contact
  • Interface heavy for quick social posts
  • AI prompt limits on Free/Pro restrict power users
  • No social scheduling or publishing tools
Want the best of both worlds? Try PostFlow for fast content creation without the complexity. Try out now

Final Verdict

Buffer and Grammarly target different aspects of content workflows: Buffer is a dedicated social media management platform for scheduling, engagement, and analytics, while Grammarly is a versatile writing assistant for error-free, toned communication. They complement each other but serve distinct purposes.

Choose Buffer if your focus is social media operations like scheduling and analytics. Opt for Grammarly if writing quality and communication clarity are core. For full workflows, use both: Grammarly to craft content, Buffer to publish and track on social.

Overall Scores

Buffer

4.4 / 5.0

Content Creation: 7/10

Value: 9/10

Grammarly

4.7 / 5.0

Content Creation: 9/10

Value: 7/10

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