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Grammarly vs Writefull Academizer

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Grammarly publishes a starting price ($12); Writefull Academizer does not. Both have a free tier.

GrammarlyGrammar, tone and rewriting help inside every appWritefull AcademizerFree tool that rewrites an informal sentence into academic-sounding English for papers and theses.

Side by side

FactGrammarlyWritefull Academizer
CategoryGrammar & ProofreadingParaphrasing & Rewriting
Pricing modelFreemiumFree
Starts at$12 month—
Public APINoNo
PlatformsWeb, Chrome Ext, Windows, macOS, iOS, AndroidWeb
CompanySuperhumanWritefull
Launched2009—
Last verifiedSep 6, 2026Sep 1, 2026

What our research says

Grammarly

Still the default for catching mistakes inside other people's software, but the free tier has quietly become an AI-prompt meter and the honest price is $30 unless you commit to a full year.

Pros

  • Runs inside the apps people already write in rather than as a separate editor
  • Free tier still covers spelling, grammar and tone detection with no time limit
  • Pro folds in plagiarism and AI-text detection that rivals charge for separately

Cons

  • The $12 headline is the annual rate; paying monthly costs $30
  • Free AI allowance is 100 prompts a month and depletes quickly
  • No public API, so it cannot be embedded in another product
  • Enterprise pricing is not published anywhere on the site

Writefull Academizer

Academizer solves one narrow problem well: turning a casual sentence into something that reads like it belongs in a paper. It is a single free widget rather than a full editing suite, so students who need broader language feedback will end up looking at Writefull's paid Word or Overleaf add-in instead.

Pros

  • Free with no account required for the core rewrite
  • Built specifically for academic register rather than general paraphrasing
  • Backed by a team with an academic-linguistics background and journal-trained language models
  • Part of a wider free toolset (title generator, abstract generator, GPT detector)

Cons

  • Handles single sentences, not whole documents
  • Deeper feedback and unlimited use require Writefull's separate paid Word or Overleaf add-in
  • No mobile app or browser extension, only the web widget

Which one fits

Choose Grammarly if you need

  • Anyone writing in a browser, Word or email who wants corrections in place
  • Teams enforcing a house style guide across people who are not writers
  • Non-native English speakers who want fluency rewrites, not just error flags

Choose Writefull Academizer if you need

  • Quickly formalizing a sentence or two before pasting it into a draft
  • Non-native English speakers unsure if a phrase sounds academic enough
  • Students who don't yet want to pay for a full writing-feedback subscription

More comparisons

All Writefull Academizer alternatives →Browse all Grammar & Proofreading →