Free Gemini-Powered Math Tutor
Pengi uses Google Gemini to deliver real-time voice and whiteboard tutoring — on Khan Academy, IXL, or any math problem you are working on. It guides you step by step and never just hands you the answer.
Try it right now
Talk to your Gemini-powered AI tutor. No sign-up needed.
No account needed. Talk to your AI tutor with voice.
How it works
Install or visit
Get the free Chrome Extension to enable voice tutoring on any learning site, or go directly to pengi.ai to start a lesson in your browser.
Start a lesson
Open Khan Academy, IXL, Scratch, PhET, or any math problem. Pengi detects the current exercise and gets ready to help.
Get voice + whiteboard guidance
Speak your question out loud or type it. Pengi's Gemini-powered tutor responds with voice hints and can draw on a shared whiteboard — guiding you to the answer without ever giving it away.
Works on your favorite platforms
Install the Chrome Extension and Pengi activates automatically on these sites.
Khan Academy
All subjects, grades K–12
IXL
Math & ELA, adaptive practice
Scratch
Creative coding projects
PhET Simulations
Physics & chemistry labs
pengi.ai
Native lessons & practice
Why Pengi vs ChatGPT for math homework
Both use large language models. The difference is philosophy and design.
| Feature | Pengi (Gemini) | ChatGPT |
|---|---|---|
| Socratic method | Always — asks guiding questions, never lectures | Rarely — defaults to direct explanation |
| Answer policy | Never reveals the answer | Gives the answer immediately if asked |
| Curriculum alignment | K–12 math, textbook-aware | General knowledge, not curriculum-specific |
| Child safety | Designed for kids; safe, focused scope | General-purpose; not scoped to education |
| Real-time voice | Built-in, low-latency voice via Gemini | Voice mode available but not tutor-optimized |
Frequently Asked Questions
- Is Pengi's tutor really powered by Gemini?
- Yes. Pengi's AI tutor runs on Google Gemini. We chose Gemini for its strong math reasoning, multimodal capability (it can read your screen), and low-latency voice performance — all of which matter for real-time tutoring.
- Is the Gemini math tutor free?
- Pengi is free to start — no credit card required. You can begin a live tutoring session immediately. Premium plans unlock unlimited session time and advanced features.
- How is Pengi different from ChatGPT for homework?
- ChatGPT gives you the answer. Pengi never does. Instead, it uses the Socratic method — asking guiding questions that help you arrive at the solution yourself. This is proven to build long-term understanding rather than answer-dependency. Pengi is also designed specifically for K–12 math, not general conversation.
- What grade levels does the Gemini tutor support?
- Pengi supports grades 1 through 12, covering arithmetic, pre-algebra, algebra, geometry, precalculus, calculus, and statistics. The tutor automatically adapts its language and scaffolding to match the learner's level.
- Can I use Pengi on Khan Academy?
- Yes. Install the free Pengi Chrome Extension and it will activate automatically when you open Khan Academy, IXL, Scratch, PhET, or pengi.ai. The tutor reads the current problem on your screen and provides voice-guided hints without ever revealing the answer.
Ready to try the Gemini math tutor?
Start a free lesson now — no account needed. Or install the Chrome Extension to get Pengi on every site you already use for math.