Simple plagiarism detection
for educators
Submit student text via API and get instant similarity scores with source citations — checked against web sources and academic databases.
No contracts. Cancel anytime.
Web Sources
Checks live web pages
Academic DBs
Scholarly article index
Similarity Score
0–100% match rating
Source Citations
Exact URLs returned
One simple plan
Everything you need to check student submissions.
Educator Plan
- ✓500 checks per month
- ✓Web + academic source scanning
- ✓Similarity score + source URLs
- ✓REST API with JSON responses
- ✓API key authentication
- ✓Usage dashboard
- ✓Email support
Secure checkout via Lemon Squeezy
Frequently asked questions
How does the plagiarism check work?
You POST text to our API endpoint. We scan it against indexed web pages and academic sources, then return a similarity percentage and a list of matching source URLs with highlighted excerpts.
What counts as one check?
Each API call with a text submission counts as one check, regardless of document length. Your plan includes 500 checks per month, which resets on your billing date.
Can I cancel my subscription anytime?
Yes. Cancel from your Lemon Squeezy customer portal at any time. You keep access until the end of your current billing period with no cancellation fees.