Crossref Similarity Check vs Smodin Plagiarism Checker
Crossref Similarity Check
crossref.org
Smodin Plagiarism Checker
smodin.ioSide by side
| Figure | Crossref Similarity Check | Smodin Plagiarism Checker |
|---|---|---|
| Price from | $3.33/mo | $10/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 2 | 4 |
| Spec score · Plagiarism Checkers | 8.4 (#8) | 7.4 (#24) |
| Purpose | Similarity Check helps Crossref members detect potential plagiarism by comparing manuscripts with published academic and general web content. | The plagiarism checker compares text against web and academic sources and returns similarity scores, matched sources, and highlighted sections. |
Plans
Crossref Similarity Check
- Similarity Check per-document checkingFree
- Similarity Check annual service fee$40 a year
Smodin Plagiarism Checker
- Starter$10 a month
- Premium$16 a month
- Starter$10 a month
- Premium$16 a month
In their own words
Crossref Similarity Check
Crossref Similarity Check is a paid plagiarism-screening service for Crossref members. It compares submitted manuscripts with academic publications and general web content, using Turnitin’s iThenticate software. Reports provide a Similarity Score and highlight matching passages for editorial review. Crossref says the comparison database contains over 78 million full-text scholarly content items. Editors can submit manuscripts in iThenticate or through a manuscript system using the API, then receive an immediate report describing potential matches and overlap. Membership includes read-only database access, discounted checking fees, unlimited organizational users, and enhanced text matches in Document Viewer. Participation requires Crossref membership, active publication of DOI-assigned content, and full-text URLs in metadata. The annual service fee is $40 a year, representing 20% of the membership fee. Per-document checking is free for the first 100 documents yearly, then volume-tier charges apply to documents up to 25,000 words.
Smodin Plagiarism Checker
Smodin Plagiarism Checker has no write-up on Specifiction yet; its figures are above.