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Software · head to head

Grammarly vs Sunsama

Grammarly logo

Grammarly

Software

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite
Sunsama logo

Sunsama

Software

The daily planner for busy professionals

From
$17/month
Rated
-
Full reviewWebsite

The short version

  • Only Grammarly has a free tier, so it costs nothing to try first.
  • Each has a real cost: Grammarly occasional false positives and grammatically incorrect suggestions that can introduce errors; Sunsama pricing is higher than some competitor daily planners at $17+ per month
  • They diverge on capability: Grammarly covers Grammar checking, Sunsama covers Daily planning ritual.

Where they differ

Only the attributes on which Grammarly and Sunsama actually diverge.

Attributes where Grammarly and Sunsama differ
AttributeGrammarlySunsama
Starting priceFree$17/month
Free tierYesNo
PlatformsWeb, macOS, Windows, iOS, AndroidWeb, iOS, Android
Founded20092016

Identical on both: pricing model (Unknown), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Grammarly

  • Grammar checking
  • Spelling correction
  • Punctuation
  • Clarity suggestions
  • Engagement feedback
  • Delivery insights
  • Plagiarism checker
  • Citation generator

Only in Sunsama

  • Daily planning ritual
  • Task timeboxing
  • Workload management
  • Shutdown routine
  • Focus mode
  • Google Calendar
  • Outlook
  • Todoist

Both cover

  • Slack

What people use each for

The jobs each tool is most often brought in to do.

Grammarly

  • Email writingnot Sunsama
  • Document editingnot Sunsama
  • Academic writingnot Sunsama
  • Business communicationnot Sunsama
  • Content creationnot Sunsama

Sunsama

  • Schedulingnot Grammarly
  • Appointment bookingnot Grammarly
  • Time trackingnot Grammarly
  • Resource managementnot Grammarly
  • Team coordinationnot Grammarly

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Grammarly

  • Occasional false positives and grammatically incorrect suggestions that can introduce errors
  • Privacy concerns about sending text to Grammarly's servers for analysis
  • AI capabilities sometimes produce hallucinations and fabricated citations that appear grammatically correct

Sunsama

  • Pricing is higher than some competitor daily planners at $17+ per month
  • Requires consistent daily engagement with the planning ritual to be effective
  • Limited customization of the daily planning framework compared to more flexible task managers

Pricing, plan by plan

Grammarly

Free
  • FreeFree
    • Basic grammar and spelling checks
    • Tone visibility
    • 100 AI prompts per month
  • Pro$12/month
    • Sentence rewrites
    • Tone adjustment
    • Plagiarism and AI detection

Sunsama

$17/month
  • Pro Plan (Annual)$17/month
    • Unlimited usage
    • Unlimited integrations
    • AI + MCP + Zapier support
  • Pro Plan (Monthly)$22/month
    • Unlimited usage
    • Unlimited integrations
    • AI + MCP + Zapier support

Which should you pick?

Choose Grammarly if

  • You need grammar checking.
  • You want to start without paying.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want spelling correction.
Grammarly review

Choose Sunsama if

  • You need daily planning ritual.
  • You work on Web, iOS, Android.
  • You also want task timeboxing.
Sunsama review

Questions people ask

Is Grammarly or Sunsama better?
Neither clearly leads. Grammarly starts at Free and Sunsama at $17/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Grammarly or Sunsama?
Grammarly has a free tier; the other does not. Paid plans start at Free for Grammarly and $17/month for Sunsama.
Does Grammarly or Sunsama run on more platforms?
Grammarly runs on Web, macOS, Windows, iOS, Android. Sunsama runs on Web, iOS, Android.
Can I use Grammarly for free?
Yes. Grammarly has a free tier, so you can try it without paying. Sunsama starts at $17/month.
What is Grammarly best used for?
Grammarly is most often used for email writing, document editing, academic writing, business communication. Of those, email writing and document editing are not what Sunsama is typically brought in for.
What can Grammarly do that Sunsama cannot?
Grammarly covers Grammar checking, Spelling correction, Punctuation, Clarity suggestions. Sunsama covers Daily planning ritual, Task timeboxing, Workload management, Shutdown routine. Both handle Slack.

Answered from the vendors’ own pages

Grammarly: Does Grammarly have a free version?

Yes, Grammarly offers a free tier with basic spelling, grammar, and punctuation checks, tone visibility, and 100 AI prompts per month. The Pro plan ($12/month annual) adds sentence rewriting, plagiarism detection, and 2,000 AI prompts.

Source
Sunsama: What is the pricing for Sunsama and is there a free trial?

Sunsama costs $17 per month when billed yearly or $22 per month when billed monthly. A 14-day free trial is available without requiring a credit card.

Source
Grammarly: What platforms does Grammarly work with?

Grammarly works across 1 million+ apps including Google Docs, Microsoft Word, Outlook, Slack, Gmail, and web browsers. It also integrates with productivity tools like Asana, Jira, Monday.com, Confluence, and HubSpot.

Source
Sunsama: What task management tools does Sunsama integrate with?

Sunsama integrates with Asana, Todoist, Trello, Jira, Linear, Monday.com, Notion, ClickUp, GitHub, and Google Tasks, allowing you to pull tasks from these services into your daily plan.

Source
Grammarly: Can I use Grammarly offline?

Grammarly requires an internet connection to function, though the browser extension works with some offline text areas. For offline use, the desktop app and browser extensions sync when reconnected.

Source
Sunsama: Can Sunsama sync with my calendar?

Yes, Sunsama is bidirectionally synced with Google Calendar, Outlook Calendar, and iCloud Calendar, creating a unified view of your schedule and daily commitments.

Source
Grammarly: What is included in the Enterprise plan?

The Enterprise plan includes unlimited team members, dedicated support, custom roles and permissions, data loss prevention, bring-your-own-key encryption, and unlimited AI prompts. Pricing is custom and available by contacting sales.

Source
Sunsama: Does Sunsama have a mobile app?

Yes, Sunsama is available as a mobile app on both iOS and Android through the Google Play Store and Apple App Store for managing your daily plan on the go.

Source
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