Comparison
ESL Humanizer vs Paperpal: which is better for non-native English writers?
By ESL Humanizer editorial team · Prices and limits checked September 2026
Short answer
Paperpal is a strong choice for theses and journal manuscripts, with checks for references, plagiarism and journal fit. ESL Humanizer is narrower: it rewrites a passage you wrote — an essay, motivation letter, cover letter or email — so it sounds natural, and scores whether your meaning survived.
Paperpal is an academic writing assistant with language correction, AI writing features, plagiarism and AI-detection checks, and add-ins for Word, Google Docs and Overleaf. ESL Humanizer rewrites English that non-native speakers wrote themselves so it reads naturally, without changing the meaning. ESL Humanizer is our product, so we’ve kept its row to verifiable facts; Paperpal’s details come from its own website and can change — check before you pay.
At a glance
| ESL Humanizer | Paperpal | |
|---|---|---|
| Type | ESL writing editor | Grammar & writing assistant |
| Built for | Polishing English you wrote yourself | Researchers and students writing academic English, including many non-native speakers |
| On AI detectors | Shows an estimate, never a guarantee | Offers its own AI detector as one of several submission-readiness checks |
| Shows each change | Yes — word by word, plus a meaning score | Yes — language suggestions you accept or reject inside your document |
| Free option | 1 rewrite a day (2 when signed in), up to 1,500 characters (~250 words) each | 200 language suggestions a month and AI features up to 5 times a day |
| Paid from | $24.95/month or $89 for 4 months | Prime $25/month, or $12/month billed yearly ($144) |
What Paperpal does well
- Built around academic writing, with millions of users in research
- Works inside Word, Google Docs and Overleaf
- Submission checks beyond language: plagiarism, references, AI detection and journal fit
- Free plan with a monthly quota of language suggestions
Where Paperpal falls short for non-native writers
- The free plan caps language suggestions at 200 a month, which a long paper uses up quickly
- Aimed at research writing; less focused on personal statements, cover letters and work email
- No meaning score showing whether a rewrite changed what you said
What ESL Humanizer does differently
- ESL Humanizer rewrites whole passages for natural phrasing and gives each rewrite a meaning score.
- It has pages and modes for applications, IELTS practice and work email, not only research papers.
- Its AI-detection check is shown before and after as an estimate, never as proof.
Which should you choose?
Choose Paperpal if…
- You're writing a thesis, dissertation or journal article
- You want reference, plagiarism and journal-fit checks in the same tool as your editor
Choose ESL Humanizer if…
- You're polishing a personal statement, motivation letter, cover letter or email
- You want to see every change word by word with a meaning score
A note on AI detectors
No tool can guarantee how an AI detector will score your text. In a peer-reviewed Stanford study, seven detectors labeled 61% of human-written TOEFL essays as AI-generated on average, and independent tests have found detectors disagree with one another. Natural English you wrote — plus drafts that show your process — is the most reliable protection. Read more about why detectors flag ESL writing.
Wrote it yourself? Make it sound natural.
Paste a paragraph. ESL Humanizer fixes non-native phrasing, keeps your meaning and highlights every change — free for up to ~250 words.
Quick answers
How much does Paperpal cost?
Paperpal's help center lists Prime at $25 a month, or $144 a year ($12 a month) billed annually, and Pro at $59 a month or $348 a year. A free plan includes 200 language suggestions a month.
Is Paperpal good for non-native English speakers?
Yes, for academic writing in particular — it's built for researchers, and many of its users write in English as a second language. For applications, cover letters and email, a tool that rewrites whole passages and scores meaning may fit better.