# Grammarly vs 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

- Grammarly profile: https://finderatlas.com/tools/grammarly
- Motion profile: https://finderatlas.com/tools/motion
- Comparison page: https://finderatlas.com/compare/grammarly-vs-motion
- Last reviewed: October 2026

## 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.

### 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.

## Pricing

| | Grammarly | Motion |
| --- | --- | --- |
| Pricing model | Freemium | Free trial |
| Free plan or trial | Yes | No |
| Starting price | $0 | $19 |

## Features

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

## Platforms

| Platform | Grammarly | Motion |
| --- | --- | --- |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Browser Extension | No | No |
| Chrome Extension | Yes | No |
| Firefox Extension | Yes | No |

## Grammarly strengths

- 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.

## Grammarly limitations

- 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 strengths

- 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.

## Motion limitations

- 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.

## FAQ

**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.