Head to head · Writing · updated Oct 25, 2026
ProWritingAid vs QuillBot
ProWritingAid scores 11 to QuillBot's 11 on public evidence for grammar, tone & editing, and they rank #3 and #4 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
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.
QuillBot
A paraphraser, grammar checker, summarizer and AI detector/humanizer popular with students.
+ The paraphraser's mode slider (fluency, formal, simple, creative) is the fastest way to rework a clumsy paragraph.
− Paraphrased text sometimes changes meaning, and its humanizer and detector are unreliable against serious detection tools.
Side by side
public evidence| ProWritingAid | QuillBot | |
|---|---|---|
| Evidence score / 100 | 11 | 11 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 0 | 0 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier · Premium from $10/mo billed annually | Free tier · Premium from $4.17/mo billed annually |
| Platforms | web, mac, windows, chrome-extension | web, mac, windows, ios, android, chrome-extension |
| Maker | ProWritingAid | QuillBot (Learneo) |
Which one?
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.
Pick QuillBot if
- you need it on android, ios
Best for paraphrasing and quick rewrites.