Estimated monthly cost comparison — not just the headline price
Grammarly and Miro do different jobs, so this is not a like-for-like comparison. The prices below are shown side by side for reference only; compare what each tool does before comparing cost.
Prices change often — confirm on the vendor's site before buying. Report incorrect pricing →
Quick Take
Different tools for different jobs — no cost winner
Based on advertised price plus documented recurring fees, not your exact usage.
Best for Grammarly
AI writing assistant for grammar, clarity, and tone. Free plan is basic, then $12-$15/user/mo for fu
Best for Miro
Online collaborative whiteboard for teams. Free plan limits to 3 boards, then $8-$16/member/mo — but
AI writing assistant for grammar, clarity, and tone. Free plan is basic, then $1...
Advertised
$0
/month
Estimated monthly cost
$12
/month (illustrative)
AI Writing Assistance Limits
Generative AI features (rewrite, compose, ideate) have monthly prompt limits. Premium gets 1,000 pro...
Premium Required for Full Features
Free plan only catches basic grammar and spelling. Clarity, tone detection, word choice, formality l...
Per-Seat Team Pricing
Grammarly Business at $15/user/mo. A 50-person team = $750/mo ($9,000/yr). Team analytics, style gui...
Online collaborative whiteboard for teams. Free plan limits to 3 boards, then $8...
Advertised
$0
/month
Estimated monthly cost
$16
/month (illustrative)
3 Editable Board Limit on Free
Free plan restricts to 3 editable boards total. Once filled, existing boards must be deleted to crea...
Miro Assist AI Add-On
Miro Assist (AI-powered diagramming, mind mapping, sticky note generation) requires Business plan ($...
Guest Access Restrictions
Free plan has no guest access. Starter allows limited external guests (day passes). Full guest colla...
Grammarly advertises $0/mo. Miro advertises $0/mo.
Grammarly has 3 documented hidden fees. Miro has 3.
Grammarly confidence: 76%. Miro confidence: 73%.
| Metric | Grammarly | Miro | Winner |
|---|---|---|---|
| Advertised Price | $0/mo | $0/mo | — |
| Estimated Monthly Cost | $12/mo | $16/mo | — |
| Recurring Extra Fees | +$12/mo | +$16/mo | Grammarly |
| One-Time Costs | $0 | $0 | — |
| # Documented Fees | 3 | 3 | — |
| Pricing Tiers | 3 | 3 | — |
| Affiliate Program | None | No public affiliate program | — |
Grammarly advertises $0/mo and Miro advertises $0/mo. Grammarly has 3 documented extra fees (recurring: +$12/mo), while Miro has 3 (recurring: +$16/mo). Grammarly and Miro do different jobs, so there is no like-for-like cost winner — compare what each one does before comparing price. Your real cost depends on seats and usage — use the calculator for your numbers.
Grammarly has 3 documented extra fees: AI Writing Assistance Limits, Premium Required for Full Features, Per-Seat Team Pricing. Recurring fees add roughly $12/mo on top of the $0/mo advertised price.
Miro has 3 documented extra fees: 3 Editable Board Limit on Free, Miro Assist AI Add-On, Guest Access Restrictions. Recurring fees add roughly $16/mo on top of the $0/mo advertised price.
Choose Grammarly if: AI writing assistant for grammar, clarity, and tone. Free plan is basic, then $12-$15/user/mo for fu. Choose Miro if: Online collaborative whiteboard for teams. Free plan limits to 3 boards, then $8-$16/member/mo — but. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is compiled from public vendor pricing pages and documentation. It uses illustrative assumptions (see "Cost Comparison Summary"), not your exact seats or usage, and vendor prices change often. Confirm current prices on each vendor's site, and use our calculator with your own usage for a closer estimate. Spotted an error? Email hello@trulycritic.com.
Enter your usage to see personalized pricing for both tools
Use Free Calculator