VS
Head-to-Head Comparison
Grammarly vs Motion
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Published Last updated
- Grammarly starts at £10/mo and Motion at US$29/mo — published in different currencies, so not a like-for-like figure.
- On privacy, Motion offers GDPR compliance where Grammarly does not.
- Grammarly is best for teams building AI writing into their products; Motion for businesses needing enterprise-ready AI productivity.
G
Grammarly
AI Writing
8.1/ 10
Free · Free tier
Best for teams building AI writing into their products
Visit GrammarlySee all AI Writing Tools →
Motion
AI Productivity
7.8/ 10
US$29/mo · Paid only
Best for businesses needing enterprise-ready AI productivity
Visit MotionSee all AI Productivity Tools →Some “Visit” links are affiliate links. How we earn →
Feature comparison
| Feature | Grammarly | Motion |
|---|---|---|
| CompareMyAI score | 8.1 / 10 | 7.8 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| Vendor holds SOC 2 | ||
| Vendor holds ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes |
Certifications may only cover business or enterprise plans. Check the vendor’s trust page for your plan.
Grammarly comes out ahead — and you can try it free.
Try Grammarly freeAffiliate link · how we earn
Pricing
Price checked with vendor on
G
Pro AIUS$29/mo ≈£21.79/mo
Business AIUS$49/mo ≈£36.83/mo
Always check the provider's site for the latest pricing.
Pros & cons
Grammarly
Pros
- +SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
- +Works across browser, desktop, Word, Google Docs, and email with one install
- +Pro tier confirmed at £10/mo in GBP — transparent UK pricing
- +Explicit opt-out from AI model training available in account settings
Cons
- −Trains on user writing by default — opt-out required
- −GDPR compliance not explicitly confirmed on accessed official pages
- −Free AI prompt limit (100/mo) may feel restrictive for daily users
Motion
Pros
- +SOC 2 Type II and GDPR certified
- +Automatically reschedules tasks when meetings overrun
- +Team capacity planning and Gantt charts on Business plan
- +Covers tasks, calendar, docs, and notes in one tool
Cons
- −No free tier — paid plans only, no trial by default
- −No API access for custom integrations
- −Credit-based AI feature limit even on paid plans
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly pulls ahead with API access and a free tier. Motion counters with GDPR compliance. Grammarly scores 8.1/10 to Motion's 7.8/10. Pick Grammarly if you need API access; pick Motion if GDPR compliance matters.
Frequently asked questions
Does Grammarly train on your data?
Based on published vendor information, Grammarly may use your data to help train its models. Training is sometimes opt-out, or switched off on paid and business plans, so review the privacy settings in your account.
Does Motion train on your data?
Based on published vendor information, Motion does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Are Grammarly and Motion GDPR compliant?
Motion states it is GDPR compliant, while Grammarly is not recorded as GDPR compliant in our data. Confirm the current position with each vendor if GDPR compliance is important for your use.
Do Grammarly and Motion have a free tier?
Grammarly offers a free tier, while Motion is paid only. If you want to try before paying, Grammarly is the one to start with.
Which has an API, Grammarly or Motion?
Grammarly offers API access, while Motion is not recorded as offering a public API in our data. For programmatic integration, Grammarly is the better fit.