Knows your weak spots
Cell respirationMisconception42%
EnzymesForgot68%
Membranes91%
Cram smarter. Remember longer.
Drop in a lecture, PDF or YouTube link. Cramby turns it into a lesson, quizzes you on what you miss, and plans your reviews until it sticks.
No card needed · Web, Mac, Windows, iPhone & Android
A demo of Cramby: a lecture PDF becomes a lesson, a quiz celebrates a right answer and explains a wrong one using your notes, flashcards schedule themselves, and a Today card says what to review before your exam.
Works with what you already have
PDFs
PowerPoint
Word docs
YouTube
Lecture recordings
Web pages
Photos of notes
Google Drive
Notion
Google Classroom
Clerval
How Cramby works
Upload. Learn. Practice. Improve.
Upload anything
Lectures, slides, PDFs, YouTube, web pages or a photo of the whiteboard. Or just type a topic.
Recording lecture…
- Biology 101 · Week 3
- 00:42:18 captured
- Speaker: Dr. Patel
Learn it properly
Cramby turns it into a short course: clear notes, bite-size lessons and examples — grounded in your material.
Photosynthesis
- 1 · Getting started
- 2 · The light reactions
- 3 · The Calvin cycle
Practice what you miss
Quizzes and flashcards adapt to your mistakes — a forgotten fact gets a review, a misconception gets re-explained.
Calvin cycle · 54%
- Misconception spotted
- 3 targeted questions
- 1 worked example
Improve every day
Set an exam date and Cramby plans your sessions, spaces your reviews and adjusts as you get better.
Exam Friday
- Mon · 12-min review
- Wed · Practice test
- Thu · Weak spots only
Recording lecture…
- Biology 101 · Week 3
- 00:42:18 captured
- Speaker: Dr. Patel
Not just notes
A coach that knows what you don’t know yet.
Every answer teaches Cramby something about you. It spots the difference between forgetting and misunderstanding — and picks what to do next.
Plans your exam week
Mon
12m
Tue
18m
Wed
15m
Thu
10m
Fri
Exam
A tutor inside your notes
Glycolysis splits glucose into two pyruvate molecules, netting 2 ATP in the cytoplasm.
ExplainExampleQuiz me
Everything in one place
Everything you need to actually learn.
Podcasts of your notes
Two friendly voices walk through your lesson. Great for the bus, the gym, or 1am.
Mitochondria
Osmosis
Krebs cycle
12 dueFlashcards that schedule themselves
Spaced repetition puts each card in front of you right before you’d forget it.
A Stroma
B Thylakoid ✓
C Nucleus
Quizzes that explain
Every answer comes with the why — straight from your material.
Today
On every device
Web, Mac, Windows, iPhone and Android. Your progress follows you.
Connects when you want
Calendar, Drive, Notion, Classroom — and your Clerval context. Optional, always.
Whatever you’re cramming for.
From AP Bio to bar prep — if it’s in your material, Cramby can teach it.
Biology
Chemistry
Calculus
History
Computer science
Psychology
Law
Medicine
- Medicine
- Economics
Geography
Music theory
Languages
Physics
Literature
Engineering
Free to start. Cheap to keep.
Less than a coffee a month when it’s exam season.
Free
For trying it on your next lecture.
$0
- Unlimited lessons from any source
- 600 AI credits every month
- Flashcards, quizzes & podcasts
- Web, desktop and mobile
Save 50% yearly
Pro
For when grades are on the line.
$10/ month · or $60/year
- 20,000 AI credits every month
- Deep mode for hard topics
- Exam plans & daily coaching
- 50 MB uploads
Questions, answered.
PDFs, PowerPoint and Word files, photos of notes, audio recordings of lectures, YouTube links and web pages. You can also just type a topic and Cramby will teach it from scratch.
Cramby doesn’t stop at notes. It turns your material into a short course, tracks which concepts you actually get wrong, and plans what to study next — so the second session is smarter than the first.
Lessons, quizzes and flashcards are built from your material, and explanations point back to the part of your notes they came from. When Cramby isn’t sure, it says so. You can edit everything.
Yes — formulas render properly, worked examples are step by step, and quizzes can check reasoning, not just final answers.
No. Cramby works on its own. If you use Clerval, you can optionally connect it so Cramby can use your Clerval context.
Yes. The free plan includes unlimited lessons and a monthly allowance of AI credits. Pro adds far more credits, deep mode, exam plans and bigger uploads.
Start cramming smarter tonight.
Your next lecture is the perfect first lesson.
Start learning — it’s free