Take a photo,
Solve questions
English grammar, reading comprehension, vocabulary, math problems, or Korean language questions and AI returns the correct answer, a clear explanation or step-by-step solution, and key points.
Study faster. Understand better.
Take a photo of any question—English, Math, or Korean—and get the correct answer, clear explanations (and why other choices are wrong), plus key takeaways.
- 📸One photo is all it takes
- 🧩Breakdowns that actually make sense
- 🕒Save time and keep your streak
Covers what you’re studying
English · Math · Korean — for school and major exams.
How it works
Snap
Open Chalcack and take a clear photo.
Analyze
AI reads the problem and understands context.
Explain
See the answer and why others are wrong.
Review
Check your history when you revise.
Why students choose Chalcack
Instant from a photo
Skip the search rabbit hole. Point, snap, done.
Explanations that stick
Understand the logic, not just the final answer.
Built for progress
Save attempts, review later, and learn faster.
Students on Chalcack
“Explains answers better than many answer sheets.”
“Step-by-step math saved me tons of time.”
“Great for TOPIK—fast and detailed.”
FAQ
What subjects does Chalcack support?+
English (TOEIC, SAT, school), Math (algebra, geometry, word problems), and Korean (TOPIK, school exams).
Do I get explanations or just answers?+
Both—the correct answer plus clear explanations, step-by-step math, and key takeaways.
Can I sign in with my existing account?+
Yes. Login with Kakao, Google, or Apple.
Can I review past questions?+
Yes. Your recently solved questions are saved for quick review.
Stop hunting for explanations.
Snap a photo and study smarter—English, Math, Korean.