Students on Castle Learning cannot easily copy question text or search for answers online; this extension streamlines that workflow by extracting questions from the page and enabling quick Google/Quizlet searches

User navigates to a Castle Learning question page → clicks the extension popup → the extension reads question text from the page DOM → user clicks 'Copy' to clipboard or 'Search' to open a Google search (with optional exact match and Quizlet-only filters)

Target users: Students using Castle Learning / School-age learners seeking to look up or study Castle Learning questions

Extension is very small (7 text files, ~2KB main logic) so there is little code to analyze
Cannot verify Castle Learning's own authentication requirements from extension source alone
README.md is essentially empty (only title)

Monetization

No paid features detected

No evidence of any paid features, payment platforms, subscription logic, premium tiers, or upgrade UI anywhere in the source code. The extension provides all its features (copy question, search question with exact match and Quizlet filter) for free.

Confidence: 98
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension itself has no login UI, no authentication logic, and no account system. It uses only activeTab, scripting, and storage permissions. While Castle Learning (the destination service) likely requires a school/student account, the extension's functionality (reading page content via executeScript) does not itself require authentication.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab、scripting、storage

Publisher

Kenny Hui

Independent publisher

Email: [email protected]
Phone: --
Address: --

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Permissions

Host access