If you can't
explain it
to a goose,
you don't know it.
I'm a goose with opinions. Tell me what you think you know, and I'll keep asking until I find the parts you're guessing at. No answers. No hand-holding. Just questions, until something clicks.
Daily usage / Premium
10×
£7.99/mo · cancel anytime
Input
voice + text
speak at any volume, or just type
honking the renderer awake…
Click me to honk
The Method
How Professor Goose actually makes things stick.
Reading is recognising. Highlighting is decorating. Explaining is the only thing that proves you've got it. So that's all I let you do.
1.
Pick something you "know"
Type it, say it. A theorem, a war, a coding pattern. The cockier you are about understanding it, the better.
2.
Explain it to me
Out loud, in your own words, like I've never heard of it. No notes, no peeking. I'll wait.
3.
I find the holes
I ask follow-ups exactly where you're hand-waving. The bit you skipped is the bit you don't really know yet.
m
You · 2:14pm
Okay. Supply and demand. So when prices go up, demand goes down, and supply goes up. Markets find equilibrium.
G
Professor Goose
"Sure. Now - why does demand go down? Walk me through one specific buyer making one specific decision."
m
You · 2:15pm
Because… they have less money to spend? So they buy less of it.
G
Professor Goose
"Hm. But the buyer's wallet hasn't changed - only the price did. So what's actually different about her decision?"
Understanding · 61% Goose mode · Standard Topic · Microeconomics
The science
Re-reading doesn't work.
Here's why.
You forget ~70% of new information within 24 hours unless you actively retrieve it. Re-reading feels productive. It isn't — you're recognising, not recalling.
Every question I ask forces you to produce the answer from memory. That's what resets the curve. That's the whole thing.
What I Can Do
Understanding meter
I know when you're faking it.
Every answer nudges a live score. The bar rises when you add a real mechanism, falls when you hand-wave. I show you why.
UNDERSTANDING · SUPPLY AND DEMAND 73%
+8 · explained the mechanism
Goose intelligence
Pick how stubborn I should be.
Five flavours, from "easy to convince" to "ruthless." Two are Premium-only for when you really need to be sure you've got it.
Convince-me level
balanced · wraps when the explanation is solid
Session memory
I remember every conversation.
Pick up next week, or yesterday. I know which bits you dodged last time, and I'll start the next round there.
Your sessions
supply and demand
today · 4 turns · 73/100
quantum superposition
yesterday · 6 turns
the French Revolution
last week · 3 turns
Premium Features
Know your whole syllabus.
Down to the last topic.
Upload your exam board syllabus and get a live, confidence-coloured mind map of every unit and topic. Study a node, watch it fill with green. Export the session as a structured PDF.
✦ Syllabus Mind Map
Every topic in your syllabus. Tappable, trackable.
Upload any PDF syllabus or module guide. Edexcel, AQA, OCR, and Cambridge are examples, not limits. The Goose extracts every unit and subtopic into a two-level mind map. Tap any node to start a session on exactly that topic. After each session, the node fills with colour based on how well you explained it: grey is untouched, orange is in progress, green is solid.
Live Syllabus Map · Example: Edexcel IAL Physics
✦ PDF Session Export
A structured record of every session.
Export any saved session as a PDF - full transcript, topic context, understanding score, and a Goose-written summary of what you should revisit. Share with a teacher, file it as revision notes, or just have proof you actually studied.
Session Export · PDF Preview
Session Export
professor goose
Mechanics and Materials
Unit 1 · Edexcel IAL Physics · 10 May 2026 · 8 turns
m
Hooke's law - force is proportional to extension, up to the elastic limit. After that the material deforms permanently.
G
"Good. What exactly changes at the atomic level past the elastic limit that stops the material returning?"
m
The bonds between atoms are permanently displaced - they slip rather than stretch and return.
Revisit before next session
Stress-strain curve beyond UTS; difference between brittle and ductile fracture behaviour.
What students explain
Anything you can explain, we can test.
Physics, history, code, economics - if you can say it out loud, the goose will find the gaps.
gravity the French Revolution recursion how vaccines work compound interest DNA replication black holes supply and demand how encryption works natural selection Bayesian probability game theory quantum entanglement the Krebs cycle cognitive dissonance how transistors work the Cold War tectonic plates neural networks how stars die the prisoner's dilemma Keynesian economics how the internet works entropy
The Bill
Free and Premium plans for students.
Free forever with 1x daily usage across voice and text. Premium raises that to 10x for £7.99 a month.
Free
£0
forever - no card
- 1x daily usage
- Voice + text mode
- Up to 3 saved sessions
- Standard, Stubborn & Quick goose
- Skeptical & Intuitive modes
- Syllabus mind map
- PDF session export
- Early access to new features
most honks
Premium
£7.99
per month - cancel anytime
- 10x daily usage
- Voice + text mode
- Unlimited saved sessions
- All five goose intelligence modes
- Skeptical & Intuitive (deep prep)
- Syllabus mind map
- PDF session export
- Early access to new features
Letters to the Editor
Frequently asked questions about Professor Goose.
"Still not sure? Just try it. I'm free to start, and I promise to be a little annoying."
- the goose
Four steps: pick a concept, explain it like you're teaching a beginner, find the gaps where you couldn't explain clearly, then simplify. I automate the hard parts - finding exactly where your explanation breaks down and pushing you to fix it.
Yes. The technique is subject-agnostic. People use me for physics, history, law, programming, economics, biology, medicine, and the occasional bizarre hyperfixation. If it can be explained out loud, I can find the holes in it.
A Premium feature. You upload any PDF syllabus or module guide and the Goose reads it and builds a two-level topic map: units at the top, subtopics below. Edexcel, AQA, OCR, and Cambridge are examples, not limits. Tap any node to start a session on exactly that topic. After each session the node fills with colour - grey for untouched, orange for in progress, green for solid. It's a live revision tracker across your whole course.
Also Premium. The export PDF contains the full session transcript, topic context, your understanding score, and a Goose-written summary of what to revisit before your next session. You can share it with a teacher or just use it as focused revision notes.
ChatGPT answers your questions. I refuse to. I only ask questions back and never give answers. That constraint is what forces real recall - recognising an answer is not the same as producing one from memory. Different tool, different job.
Rubber duck debugging is a real thing - explaining a problem out loud to an inanimate object reveals gaps you didn't know were there. A goose is a duck with attitude. It asks questions back. It judges you a little. It works better.
Sessions are private to your account. We don't sell or share your study data. Voice is processed to generate replies and not retained; we don't store audio recordings.
Free gives you 1x daily usage across voice and text, up to three saved sessions, and three goose intelligence modes. Premium raises that to 10x daily usage, unlimited saved sessions, all five intelligence modes, syllabus mind map, and PDF export - for £7.99/mo, cancel anytime.
Field Notes
From the study blog.
Writing on active recall, exam revision, memory, and the mistakes that make students feel productive without actually learning much.
Alright then.
Try me.
Free to start. No credit card. Just you, a topic you think you know, and a goose with strong opinions.