iThenticate vs Turnitin: Difference and Which to Use — 2026 Guide
Meet the Expert
Shruti Sharma
Academic Writing Coach & Plagiarism Detection Specialist
- Expert in Turnitin, iThenticate, Urkund/Ouriginal, and PlagScan plagiarism checking tools
- Guided 300+ PhD scholars in choosing the right tool for thesis and journal article plagiarism checks
- Familiar with INFLIBNET ShodhShuddhi and UGC plagiarism checking requirements
iThenticate and Turnitin are the two most widely used plagiarism detection tools in academia — and they are made by the same company. But they serve different audiences and use different databases, which means choosing the right one for your specific purpose matters. This guide explains exactly how they differ, who uses them, and when to use each.
iThenticate vs Turnitin: Side-by-Side Comparison
| Feature | Turnitin | iThenticate |
|---|---|---|
| Primary users | Students, teachers, universities | Researchers, authors, publishers, journals |
| Primary use | Checking student assignments, theses | Checking research manuscripts, books, professional documents |
| Database: Student papers | Yes — vast database of submitted student work | No — does not include student paper database |
| Database: Published research | Partial coverage | Extensive — 99+ billion web pages; 90M+ journal articles and books |
| Database: Crossref Similarity Check | No | Yes — used by 500+ publishers and 50,000+ journals |
| AI writing detection | Yes (since 2023) | Limited (being developed) |
| Access model | Institutional subscription (via university) | Institutional subscription; limited individual plans |
| Pricing for individuals | Not directly available; through institution | Individual plans available (~$100–200/year) |
| Report format | Colour-coded Similarity Report | Similar report with detailed source breakdown |
| Best for | PhD thesis checking (Indian universities) | Journal article submission pre-check |
When to Use Turnitin
Use Turnitin when:
- Your university requires it for thesis submission
- You want to check against the student paper database (previous theses from your or other universities)
- Your institution provides access (most cost-effective option for students)
- You need AI writing detection in addition to plagiarism checking
- You are checking student assignments or course work
When to Use iThenticate
Use iThenticate when:
- You are submitting a manuscript to a journal (pre-check what the journal will see)
- You want the most comprehensive check against published research literature
- You are a researcher or faculty member checking your own work before publication
- Your publisher or journal requires an iThenticate report
- You are preparing a book chapter or grant proposal
Other Plagiarism Tools Used in India
| Tool | Who Uses It | Key Feature |
|---|---|---|
| Urkund / Ouriginal | INFLIBNET ShodhShuddhi; many Indian universities | Mandatory UGC-approved tool for Indian PhD thesis checking |
| PlagScan | Some European and Indian universities | Flexible pricing; good database coverage |
| Grammarly Plagiarism | Individual researchers (premium plan) | Basic check; integrates with writing assistance |
| Crossref Similarity Check | Publishers and journals (powered by iThenticate) | Standard tool for journal peer review pre-screening |
INFLIBNET ShodhShuddhi: India's National Plagiarism Tool
Under the UGC's mandate, INFLIBNET operates ShodhShuddhi — a plagiarism detection service for Indian academic institutions. It is powered by Urkund/Ouriginal. All PhD scholars in participating institutions can access it for free. If your university is a ShodhShuddhi member, you may be required to use this tool for your official plagiarism certificate rather than Turnitin or iThenticate. Check with your library or Doctoral Research Committee.
Practical Recommendation for Indian PhD Scholars
- For official thesis submission: use whatever tool your university mandates (usually Urkund/ShodhShuddhi or Turnitin)
- For self-checking your literature review or methodology chapters: Turnitin (if you have access)
- Before submitting a journal article: use iThenticate if available, or ask your supervisor/librarian for access
- Free option: Grammarly premium, PlagScan basic, or Duplichecker for quick initial checks
Not sure which plagiarism tool your university requires or how to interpret your similarity report? Thesis Ace Writers can guide you through the entire plagiarism checking and reduction process. Book a consultation today.
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Frequently Asked Questions
Click a question to expand the answer.
The primary difference is their target audience: Turnitin is designed for educational institutions (schools, colleges, universities) and is used to check student assignments and theses. iThenticate is designed for researchers, publishers, and professionals — it is widely used by academic journals to check manuscripts before publication. Both are owned by the same company (Clarivate/Turnitin) and use overlapping but distinct databases. iThenticate checks against a larger database of published research content.
They share some databases but differ in others. Both check against web content and published journals. Turnitin additionally checks against its large database of previously submitted student papers (one of its most powerful features). iThenticate checks against a more extensive database of published journal articles, books, conference proceedings, and grey literature — making it better suited for checking research manuscripts against the published literature. Neither checks against all possible sources.
Indian universities use a range of tools. Some institutions use Turnitin directly; others use Urkund/Ouriginal (which is now more commonly used under UGC INFLIBNET's ShodhShuddhi initiative). Shodhganga-linked institutions often use Urkund/Ouriginal for mandatory plagiarism checking. Some universities allow scholars to self-check using Turnitin or iThenticate before institutional submission. Always check what your specific university's Doctoral Research Committee requires.
For journal article submission, iThenticate is the professional standard. Most leading Scopus and Web of Science-indexed journals use iThenticate (often branded as Crossref Similarity Check or CrossCheck) to screen manuscripts. Using iThenticate to pre-check your manuscript before submission simulates what the journal will see. However, if your institution gives you access to Turnitin and not iThenticate, using Turnitin is still worthwhile — it catches many of the same issues.
iThenticate is not typically purchased by individual researchers — it is an institutional/publisher subscription. Individual access plans are available directly from Turnitin/iThenticate at approximately $100–$200 per year depending on the plan and usage limits. Some universities provide access to iThenticate for faculty and PhD scholars. Researchers submitting to journals that use Crossref Similarity Check (powered by iThenticate) will have their manuscript checked automatically as part of the peer review process.