Terms of Use

Last updated: 16 October 2026

PaperCheck gives estimates from AI-text detectors and a plagiarism comparison against arXiv papers. Results can be wrong and are not a decision about whether anyone used AI or plagiarised.
PaperCheck is not affiliated with Turnitin or any university.
Only upload documents you have the right to submit. You remain responsible for your work and for following your institution's rules.
PaperCheck is a writing-review tool. Do not use it for unethical purposes, such as hiding misconduct, getting around your institution's integrity checks, or accusing someone based on its scores. You alone are responsible for how you use it and its results, and PaperCheck and its owner are not liable for any consequences of that use.
Free limits apply per person. Creating extra accounts to get more free checks is not allowed and leads to the loss of free access.
Payments: word packs are one-time purchases. Refunds are never automatic; a refund is considered only if you email us yourself with a legitimate reason, as set out in the Refund Policy.
Free tier: 5 free checks per person per calendar month, each up to 20,000 words. Free checks are counted per person (per Gmail address) and have no cash value.
We may change or stop the service at any time.