Grammarly

AI Writing / AI Productivity

84points Strong
Web

Writing assistant for grammar, tone, clarity, rewrite suggestions, and workplace communication.

Workplace writingGrammar and clarityTeams

QuillBot

AI Writing / AI Productivity

77points Good
Web

Paraphrasing, rewriting, grammar, summarization, and citation support for students and writers.

StudentsParaphrasingSummaries

Side-by-side comparison

AreaGrammarlyQuillBot
AppDex Score84/100 (Strong)77/100 (Good)
PricingFree plan. $12/month annual plan.Free plan. $8.33/month annual plan.
Free planYesYes
Best forWorkplace writing, Grammar and clarity, Teams, Email and docsStudents, Paraphrasing, Summaries, Budget writing help
Not best forLong creative generation, Users who need a full AI research assistantDeep research workflows, Brand voice marketing teams
StrengthsExcellent everyday writing surface, Very easy adoption, Strong team controlsGood value, Simple writing utilities, Helpful for students and rewrites
WeaknessesLess broad than general assistants, Premium value depends on writing volume, Can be too corrective for some voicesLimited advanced workflows, Can encourage over-reliance on paraphrasing, Less differentiated
Last reviewedMay 2, 2026May 2, 2026

Grammarly strengths

  • Excellent everyday writing surface
  • Very easy adoption
  • Strong team controls

Grammarly weaknesses

  • Less broad than general assistants
  • Premium value depends on writing volume
  • Can be too corrective for some voices

QuillBot strengths

  • Good value
  • Simple writing utilities
  • Helpful for students and rewrites

QuillBot weaknesses

  • Limited advanced workflows
  • Can encourage over-reliance on paraphrasing
  • Less differentiated

Verdict

Grammarly has the higher AppDex Score here.

Choose Grammarly for everyday professional writing quality. Choose QuillBot for lower-cost paraphrasing, summaries, and student-friendly writing utilities.

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Choose Claude for long-form writing, document-heavy work, and careful coding help. Choose ChatGPT for broader general-purpose workflows, stronger coding-token/Codex-style workflow breadth, and ecosystem support.

ChatGPT vs Gemini

10 point gap

Choose ChatGPT for broad workflow coverage and ecosystem depth. Choose Gemini when Google Workspace context and search-connected research are central.