It explains until it clicks, then checks that it landed — on a floor of lessons a person sat down and wrote.
Answers immediately. No account, no card.
Devesh
Free
Morning, Devesh — one decision worth making?
One assistant
Writing, planning, code, arguments — one assistant across all of it, and it argues back when you're wrong. There's nothing to configure and no prompt to engineer: you say the thing you're stuck on, and CHUD picks the depth, the tools, and the sources on its own. School is where it goes deepest, but it's the same CHUD everywhere.
In the conversation
Ask something with stakes and Pip convenes its council — four lenses on one question, a verdict with the vote, and the dissent kept on the record.
What you get
Chat, research, and study — the same assistant underneath, a different surface for each kind of work.
It explains, drafts, and works through problems with you — teaching, not just answering. Every new chat starts already knowing your classes and how you want to be talked to.
Answers come back with the sources attached, and you can open every one. Claims it can't verify are flagged, not stated.
Hand-authored courses for every exam in the catalog, with quizzes that check what stuck. Point it at your own notes and it builds the quiz from those.
How it works
Three things happen behind every answer. None of them are a mystery — so here they are, doing it.
Your question is matched to a written unit before a single word is generated — then it teaches that unit and checks whether it landed.
Add your classes and test dates once. Every plan after that is counted down from a real day on your calendar.
Drop in a syllabus, a lecture PDF, your notes. It reads them and hands back the two things you can actually study from — a deck and a quiz drawn from that document, not from the internet.
What you get
Write, plan, debug, argue with your thesis — one thread, one model picker, no app-switching.
Drop in a syllabus, a lab sheet, a chapter. It reads them and cites what it used.
Give it the exam date. It works backwards into days you can actually do.
Google Docs, Sheets, PDF, Markdown — the answer leaves the chat as a real file.
Made for school
Most assistants treat school as one more topic. This one keeps your classes, your mornings, and your exams in the frame — every answer starts from where your week actually is.

Give CHUD a job
One writing job, one code job, one planning job, one exam job. Each chip submits its full sentence — what you click is exactly what CHUD is asked, no hidden rewrite.
Click one — it answers as a guest, no account needed.
Sent word for word
Most AI gets you almost there. It explains the topic beautifully and then misses the one distinction your exam is actually testing, because it is guessing at the course from the internet.
chud isn't guessing. Under each course sits a floor of hand-authored units — scope, sequence, the specific traps — so an answer lands where a teacher would put it.
There's a huge difference between 90% right and right. The floor is what closes it.
AP Biology · Unit 3
There is nothing to set up. No settings to get right first, no magic phrasing to learn — you type the thing you're stuck on, in the words you'd say it out loud, and it starts working.
It picks the depth, the tools and the sources on its own, and tells you what it did. When it needs a decision from you, it asks instead of guessing.
Nothing to set up and nothing to learn. The first message works, and it already knows what's on your syllabus.
One message, four steps
It keeps what matters: your classes, your exam dates, how blunt you want it, the mistakes you keep making. Every new chat starts already knowing them.
Memory is a switch you own. Turn it off and it forgets; open Settings and you can read every fact it has kept about you, and delete any of them.
Memory you can read and delete. It keeps track of what you've mastered so it drills what you haven't.
What it remembers
Classes + mornings
Add a class and the days it meets. Every morning after, the brief opens the day — what needs you first, what's already cleared.


The part that took the longest
Every course below has a hand-authored lesson sitting behind each topic — written before anyone asked for it. This is exactly how much of each one is finished, least-finished first.
Counting the authored lessons in the shipped curriculum…
AP® and SAT® are trademarks of the College Board. ACT® is a trademark of ACT, Inc. Neither endorses, sponsors, or is affiliated with CHUD.
The rule it keeps
Pip explains, quizzes, and points at the weak spot — then hands the pen back. What leaves your hands is something you can defend.

How it teaches
Understand and Solve are a real toggle in the app, not a personality. This is what each one actually does to the same physics problem.
A 2.0 kg block slides down a frictionless 30° incline. Find its acceleration.
One force has a component along the slope, and it is not the normal force. Gravity is mg straight down; break it into the part pressing into the incline and the part sliding along it. Which trig function gives you the along-the-slope piece for a 30° angle? Write that expression and tell me what you get — the mass is a trap, and you'll see why once it's on the page.
Holds the final number back until you've engaged. Never leads with the answer.
And if you insist on the answer in Understand mode, it gives you the answer. A tool that refuses gets closed, and a study aid nobody opens teaches nobody anything.
Results
These are the actual AP scores earned studying with the proof of concept that became chud. The 3 stays in the sentence — it's the one that made the rest worth fixing.
Beta tested by over 500 people across six months of daily studying before anyone was asked to pay for it.
Your attention isn't the product, and it never becomes the product.
A commitment, through SPARKk — not a number we've hit yet.
Real links you can open, or it says it couldn't find one.

Who built this
Devesh Waghmare studied for his APs on nothing but this while it was still in trial — own class materials uploaded, nothing else. Here's what came back.
It is Physics — but we must be honest with you.
No invented stats. No user counts. No "reviewed by educators." Just a tool its builder needed, that worked — with every result left on the board exactly as it came back.
A SPARKk product — gosparkk.com · @deveshwaghmare9
For the people it was built for
Index cards on a roof before an exam, a unit you're rereading on the train, the thing you finally get at eleven at night with a friend — school is where this starts, and it doesn't stop there.



Pricing
Free is enough to think out loud, and it stays free. The paid tiers are for the work that keeps going after the summary — with reasoning deep enough to trust and sources you can check. No trial that quietly bills you on day eight.
CHUD is the assistant — the character you talk to across writing, code, research, and study. The animated orb in the app is CHUD's live status; the static blue mark is its logo. Same face, one assistant, everywhere.
CHUD answers in the box at the top of this page — no account, no card. Start free when you want it to keep your work.