AI-Powered PDF Learning Assistant with Chat, Summary, and Quiz Generation
Users
15
−6 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
7
0 in 30 days
Store rank
#165K
#138K among extensions
Version
1.2.0
updated 25 Aug 2025
Users
monthly, 14 months
Latest, 16 Oct 2026:15 usersMove the mouse over the chart for any month
Ratings count
monthly, 14 months
Latest, 16 Oct 2026:7 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About LearnSphere
### Full description
LearnSphere is an AI‑powered study assistant that lives in your browser. Highlight any text on the web (or in a PDF opened in Chrome) to:
- Chat for deeper explanations
- Generate clean, scannable summaries
- Create interactive quizzes with answers and explanations
- Track your learning with a dashboard, knowledge gap analysis, and revision plans
All processing uses your own Google Gemini API key. Your data (quiz history, analytics, preferences) is stored locally in the browser.
#### What you can do
- Chat about selected text: ask “explain this,” “compare with…,” or “give examples.”
- One‑click summaries: get headings, key points, and takeaways in Markdown‑style formatting.
- Interactive quizzes: multiple‑choice questions with correct/incorrect feedback and explanations; save results.
- Knowledge tab: weak pages and frequent weak terms computed from quiz history.
- Dashboard: attempts, average score, last attempt, recent scores chart, top weak pages, and top chat topics.
- Export: copy or export quiz results (CSV) from the options page.
#### How it works
- Right‑click selected text and choose: Chat, Generate Summary, or Create Quiz.
- Or click the extension icon to open the LearnSphere sidebar.
- Configure your Gemini API key once in the popup or options page. Get a key from [Google AI Studio](https://aistudio.google.com).
#### Privacy & data
- Bring‑your‑own‑key: your Google Gemini API key is stored in Chrome storage.
- Data is local‑first: quiz results, topics, and analytics are saved in IndexedDB on your device.
- Only the text you ask the AI about is sent to Gemini. No background scraping or selling of data.
- Permissions explained:
- activeTab: run on the page you’re viewing when you use the extension
- storage: save settings and local data
- contextMenus: right‑click actions
- scripting: inject the sidebar UI on demand
#### Highlights
- Works on most websites and PDFs opened in Chrome
- Clean, responsive sidebar UI
- Helpful error messages, offline indicator, and retry logic
- No sign‑in required; you control your API key and data
#### Support
Questions or feedback? Open the options page → Knowledge or Privacy & Data to review/export your data, or use the extension popup to check status and settings.