FinderAtlas
Sign in

Grammarly vs Motion

Features, pricing, ratings, and pros and cons, side by side.

Grammarly logo

Grammarly

AI writing assistant that corrects, rewrites and tone-checks your text across every app

Freemium
Visit websiteView details

Verdict

Grammarly and Motion are both AI Assistants tools. Grammarly scores higher in FinderAtlas's editorial review (8.2 vs 7.9 out of 10), led by ease of use and value for money. Only Grammarly has a free plan or trial. Only Grammarly is available on Chrome Extension and Firefox Extension.

Best overall

Grammarly

  • Students
  • Professionals
  • Non-native English Writers
  • Marketing Teams

Choose Grammarly if

  • You want a tool built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team.
  • Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
  • Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.

Choose Motion if

  • You want a tool built for automatically scheduling tasks around meetings, managing client projects and team capacity in one tool.
  • Automatic scheduling rebuilds the daily plan around meetings and deadlines as they change.
  • Tasks, projects, calendar, docs and meeting notes live in one app, replacing several separate tools.
Best value
Grammarly
Best for beginners
Grammarly
Best for business
Grammarly

Features

18 features compared.

  • Citation Tools
    Grammarly
    Available
    Motion
    Not available
  • Style Guides and Brand Tones
    Grammarly
    Available
    Motion
    Not available
  • Cross-App Availability
    Grammarly
    Available
    Motion
    Not available
  • Enterprise Security Controls
    Grammarly
    Available
    Motion
    Not available
  • Grammar and Mistake Correction
    Grammarly
    Available
    Motion
    Not available
  • Tone Detection and Adjustment
    Grammarly
    Available
    Motion
    Not available
  • Full-Sentence and Paragraph Rewrites
    Grammarly
    Available
    Motion
    Not available
  • AI Detector and Humanizer
    Grammarly
    Available
    Motion
    Not available
  • Plagiarism Checker
    Grammarly
    Available
    Motion
    Not available
  • AI Auto-Scheduling Calendar
    Grammarly
    Not available
    Motion
    Available
  • AI Chat
    Grammarly
    Not available
    Motion
    Available
  • AI Project Manager
    Grammarly
    Not available
    Motion
    Available
  • AI Meeting Notetaker
    Grammarly
    Not available
    Motion
    Available
  • Docs, Wiki and Notes
    Grammarly
    Not available
    Motion
    Available
  • Dashboards and Reports
    Grammarly
    Not available
    Motion
    Available
  • Team Capacity Planning
    Grammarly
    Not available
    Motion
    Available
  • Booking Links and Calendar Sync
    Grammarly
    Not available
    Motion
    Available
  • Workflows and Integrations
    Grammarly
    Not available
    Motion
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Grammarly
    Freemium
    Motion
    Free trial
  • Free plan
    Grammarly
    Yes
    Motion
    No
  • Starting price
    Grammarly
    $0
    Motion
    $19
  • Plans
    Grammarly
    3 plans
    Motion
    2 plans

Grammarly plans

  • Free

    $0

    Basic writing help for individuals

    • Mistake correction
    • tone visibility
    • 100 AI prompts/month

  • Pro

    Most popular

    $30/month

    Individuals and eligible teams wanting advanced rewrites and detection

    • 2,000 AI prompts/member/month
    • tone adjustment
    • full-sentence rewrites
    • plagiarism detection
    • AI-generated text detection
    • style guide
    • brand tone
    • priority support

  • Enterprise

    Custom/custom

    Larger organizations with security and governance needs

    • Unlimited AI prompts
    • unlimited style guides and brand tones
    • SAML SSO
    • SCIM
    • audit logs API
    • data loss prevention
    • dedicated support

Motion plans

  • Pro AI

    Most popular

    $19/seat/mo

    For professionals and small teams

    • AI Chat
    • AI projects and tasks
    • AI calendar and meetings
    • AI docs and notes
    • AI task planner
    • unlimited storage
    • 7,500 AI credits per seat per month

  • Business AI

    $29/seat/mo

    For power users and businesses with complex needs

    • Everything in Pro AI
    • team capacity planning
    • advanced dashboards and reports
    • timeline and Gantt charts
    • time tracking
    • permissions and access control
    • central billing
    • priority support
    • 15,000 AI credits per seat per month

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

Grammarly
8.2overall
Motion
7.9overall

Grammarly leads in 4 categories and Motion in 1.

  • Ease of Use

    Grammarly leads by 1.1
    Grammarly
    9.1
    Motion
    8.0

  • Feature Depth

    Motion leads by 0.3
    Grammarly
    8.3
    Motion
    8.6

  • Value for Money

    Grammarly leads by 0.1
    Grammarly
    7.3
    Motion
    7.2

  • Performance & Speed

    Grammarly leads by 0.4
    Grammarly
    8.4
    Motion
    8.0

  • Documentation & Support

    Grammarly leads by 0.2
    Grammarly
    8.0
    Motion
    7.8

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Grammarly

Pros

  • Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
  • Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.
  • Pro adds tone adjustment, full-sentence rewrites, plagiarism and AI-text detection in a single subscription.
  • Team features include style guides, brand tones, analytics and user groups; Enterprise adds SSO, SCIM and audit logs.
  • Public REST APIs exist for analytics, licence management, writing score and detection.

Cons

  • Monthly billing for Pro is $30, versus $12 per month on annual billing, so month-to-month use costs 2.5 times as much.
  • Third-party tests of the AI Detector report notable false-positive rates (figures range from 14.2% to 34% across sources), so it is unreliable as proof.
  • An App Store reviewer criticizes the iOS keyboard setup for pushing users to grant broad access.
  • Experienced writers on forums report turning off many suggestions; advanced features are gated behind Pro.

Motion

Pros

  • Automatic scheduling rebuilds the daily plan around meetings and deadlines as they change.
  • Tasks, projects, calendar, docs and meeting notes live in one app, replacing several separate tools.
  • Syncs with Google, Outlook and iCloud calendars.
  • Public API plus integrations with Slack, Zoom, HubSpot, Salesforce and Zapier.
  • Team features such as capacity planning, Gantt charts and time tracking are available on Business AI.

Cons

  • No permanent free plan; both plans cost $19 or more per seat per month.
  • The trial length is not stated on the pricing page.
  • The developer describes the iOS app as a companion to the web and desktop apps rather than a standalone product, and App Store ratings are about 4.1 stars.
  • Team capacity planning, Gantt charts, time tracking and permissions require the higher-priced Business AI plan.

Platforms

  • Web
    Grammarly
    Supported
    Motion
    Supported
  • Windows
    Grammarly
    Supported
    Motion
    Supported
  • macOS
    Grammarly
    Supported
    Motion
    Supported
  • iOS
    Grammarly
    Supported
    Motion
    Supported
  • Android
    Grammarly
    Supported
    Motion
    Supported
  • API
    Grammarly
    Supported
    Motion
    Supported
  • Browser Extension
    Grammarly
    Not supported
    Motion
    Not supported
  • Chrome Extension
    Grammarly
    Supported
    Motion
    Not supported
  • Firefox Extension
    Grammarly
    Supported
    Motion
    Not supported

Integrations

Grammarly

7 integrations
  • Microsoft Office
  • Google Docs
  • Chrome
  • Safari
  • Firefox
  • Edge
  • Zendesk

Motion

12 integrations
  • Google Calendar
  • Outlook
  • iCloud Calendar
  • Gmail
  • Zoom
  • Google Meet
  • Microsoft Teams
  • Slack
  • HubSpot
  • Salesforce
  • Zapier
  • Siri

Company

  • Company
    Grammarly
    Superhuman
    Motion
    Motion
  • Founded
    Grammarly
    2009
    Motion
    2019
  • Headquarters
    Grammarly
    San Francisco, CA
    Motion
    San Francisco, CA
  • Monthly users
    Grammarly
    40 million people
    Motion
    1M+
  • Listing
    Grammarly
    Claimed
    Motion
    Claimed

Frequently asked questions

Is Grammarly better than Motion?

It depends on your workflow. Grammarly is built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team. Motion is built for automatically scheduling tasks around meetings, managing client projects and team capacity in one tool.

What are the key feature differences between Grammarly and Motion?

Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app. Motion: AI work platform that plans your day, manages projects and automates tasks.

Does Grammarly or Motion have a free plan?

Grammarly has a free plan or trial; Motion is paid only.

Which is cheaper, Grammarly or Motion?

Grammarly starts at $0 and Motion starts at $19. See the pricing table above for what each tier includes.