Head to head · Writing · updated Oct 15, 2026
Grammarly vs ProWritingAid
Grammarly scores 25 to ProWritingAid's 11 on public evidence for grammar, tone & editing, and they rank #2 and #3 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Grammarly
A writing assistant that checks grammar, tone and clarity everywhere you type and rewrites or drafts text on request.
+ Works in nearly every text field on every platform, so corrections and tone suggestions follow you into Gmail, Slack and Word.
− Suggestions can flatten a distinctive voice and the premium nag prompts in the free tier are constant.
ProWritingAid
A deep style and grammar checker with 20+ reports and AI rephrasing, aimed at fiction and long-form writers.
+ Reports on pacing, dialogue tags, repeated words and sticky sentences go far beyond what Grammarly checks.
− The volume of reports is overwhelming at first and the desktop apps can be sluggish on long manuscripts.
Side by side
public evidence| Grammarly | ProWritingAid | |
|---|---|---|
| Evidence score / 100 | 25 | 11 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 3 | 0 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier · Pro from $12/mo billed annually | Free tier · Premium from $10/mo billed annually |
| Platforms | web, mac, windows, ios, android, chrome-extension | web, mac, windows, chrome-extension |
| Maker | Grammarly | ProWritingAid |
Which one?
Pick Grammarly if
- you want the stronger public evidence (25 vs 11)
- you need it on android, ios
Best for everyday grammar and tone checking.
Pick ProWritingAid if
Reports on pacing, dialogue tags, repeated words and sticky sentences go far beyond what Grammarly checks.
Best for manuscript-level editing reports.