Join the Chalcack waitlist!

Snap photos of TOPIK questions and get AI explanations powered by ChatGPT. Join the waitlist now and receive a 50% discount code for your subscription! We'll send launch updates and discount codes to your email or phone.

📦 Pricing Plans

Recommended Plan

Pro

$3.99 $1.99 / month

50% off pre-registration discount

After launch: $3.99/month

✅ Unlimited question explanations
✅ Save vocabulary directly to your wordbook
✅ Save explanations and mistakes to your notes
✅ Weakness analysis based on mistake notes
✅ Receive “Weakness Summary Reports”

Basic Plan

Basic

Free / month

✅ Try a limited selection of AI explanations