Grammarly and ProWritingAid are the two tools that consistently come up when students ask what to use for academic writing. The comparison is genuinely interesting because the tools are not direct substitutes. Grammarly is designed for seamless, real-time correction in any writing environment. ProWritingAid is designed for deeper analysis, especially of longer documents where patterns matter as much as individual errors.

For dissertation students specifically, the question is not really which tool is better in general. It is which tool, or which combination of tools, best serves the specific demands of academic writing at length. This guide answers that question directly.

Both tools address surface-level writing errors. Neither addresses argument structure, citation accuracy, or discipline-specific conventions. For that, see our guide to the dissertation mistakes that no automated tool catches.

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1. Quick verdict

The honest answer for most dissertation students: use both. Grammarly during drafting, ProWritingAid for the pre-submission pass. The combined cost is around $20–24 per month on annual plans, or you can subscribe to ProWritingAid for a single month during your final revision period and use Grammarly’s free tier for everything else.

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2. Head-to-head: category by category

3. Full comparison table

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4. Choose Grammarly if…

• You write in multiple environments and want a tool that works seamlessly everywhere without thinking about it.
• You want a plagiarism checker included without paying extra or switching to a separate tool.
• You are early in your dissertation drafting and want real-time corrections that catch errors as you write.
• You are a non-native English writer who benefits from sentence-level suggestions appearing immediately.
• You are on a short deadline and need something that is up and running in minutes.

Grammarly is also the better choice if you already use it for other writing outside your dissertation. Having one tool that works everywhere reduces friction and keeps you writing rather than switching between applications.

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5. Choose ProWritingAid if…

• You want to understand the patterns across your entire dissertation, not just errors in individual sentences.
• You are at the pre-submission revision stage and want the most detailed analysis available.
• You write in Scrivener, where ProWritingAid’s integration is significantly better than Grammarly’s.
• You are planning to use a writing aid throughout a longer course of study and want a cost-effective lifetime license.
• Academic style — passive voice ratio, vague language, sentence variety — is where your writing needs the most work.

The principles of clear and concise academic writing that ProWritingAid’s reports address are exactly what examiners notice when they assess whether a dissertation is well-written. If style is your weak point, ProWritingAid’s document-level analysis is the better investment.

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6. Final verdict for dissertation students

Neither tool is objectively better. They are designed for different moments in the writing process.

Grammarly wins on convenience, integration, and real-time correction. Use it throughout the drafting process to keep errors from accumulating. Its free tier is functional enough to be genuinely useful, and upgrading to Premium adds the plagiarism checker and style features that matter for academic work.

ProWritingAid wins on depth of analysis. Its reports reveal patterns across your entire document that sentence-level tools miss. For a dissertation, that kind of holistic feedback is particularly valuable. Use it for a thorough pre-submission pass before you hand your work to a human proofreader.

The most effective approach is to use both: Grammarly during drafting and ProWritingAid before submission. Then, before you submit, have a professional human proofreader review what remains. Automated tools improve what they are designed to improve. They do not catch argument weaknesses, structural inconsistencies, or the kind of academic tone issues that cost students marks in examiners’ eyes. That is what Vappingo’s professional dissertation proofreading service is for.

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Frequently asked questions

►Is Grammarly or ProWritingAid better for academic writing?

For real-time grammar correction during drafting: Grammarly. For deep academic style analysis before submission: ProWritingAid. For most dissertation students, the best approach is to use both at different stages of the writing process.

►Is Grammarly allowed for university dissertations?

Yes. Grammarly is a grammar and style checker that corrects errors in your own writing without generating content. It is permitted at virtually all universities worldwide, in the same category as a spell-checker. Check your course syllabus if you are uncertain about your specific institution’s position.

►Does ProWritingAid check for plagiarism?

Not in its standard subscription. A plagiarism add-on is available at extra cost. If you need plagiarism checking bundled with your writing tool, Grammarly Premium has the advantage. For dedicated academic plagiarism checking, see our guide to the best plagiarism checkers for students.

►Which is better value for dissertation students?

ProWritingAid’s lifetime license (around $399) is the best long-term value if you plan to use it throughout your studies. For a single dissertation, subscribing to ProWritingAid for one month (~$20–25) during your final revision period and using Grammarly’s free tier for everything else is the most cost-effective approach.

►Do I still need a human proofreader if I use both tools?

Yes. Grammar checkers and style analyzers improve the surface quality of your writing. They do not assess argument logic, citation accuracy, structural coherence, or discipline-specific writing conventions. Professional human proofreading addresses what automated tools cannot. See: 10 Dissertation Mistakes AI Can’t Catch (But a Human Proofreader Will).