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Want to talk to me about it?"

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Kedu

"Need help with
complex logical reasoning?"

Questi

Understand solutions through diagrams and graphs.

Automatically chooses diagrams or interactive visuals for the question.

Explore concepts and changes with interactive visuals.

Save the image with the rotation applied?

Save changes?

Want to learn this concept?

Create cards from an image

Open concept card

Key concepts organized by subject and unit, one card each.

Upload a problem or textbook image. AI automatically determines the subject and card type (concept or skill). This uses {credits, number} credits.

Create your own concept card from materials such as a book PDF or an image.

My Concepts

Concept Cards

Enter your coupon code to receive benefits.

Enter Coupon

Check the credits that will be used for this run.
Additional features are automatically discounted by your add-on plan.

Check the credits that will be used for this run.
Credits are consumed based on the options you selected.

Run {featureName}?

Confirm the credits to recharge and payment amount.

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Interactive learning material

Fullscreen interactive learning material

Delete chat

Delete all chats

Edit chat name

Share your chat

Edit library name

Share your library

Login Required

Pick Problem Image

Name

Clear canvas

Copy to clipboard

Insert into editor

Handwriting Input

Master teacher: {title}

LaTeX Guide

Handwritten solution

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Untitled page

Payment successful!

Find card ideas on pages {from}–{to}. Analysis starts after payment.

Analyze lesson pages

Only selected cards will be made. Finished cards go into the book folder in your collection.

Make {count} selected cards

{book} pages {from}–{to}

Lesson title

Leave blank to use the book and page range

Check lesson pages

The cost could not be checked

Checking the cost

Choose today’s page range.

The book, page range and conversation so far will be cleared. Card lists and cards you already made stay in your collection.

Start again from the beginning?

From your book to a card lesson

Pikaju · Lesson assistant

This PDF has {pages} pages. Prepay the analysis fee and {credits, number} credits for the first card. Analysis fees are non-refundable; only the card fee is refunded if no candidates are found or creation fails.

Register PDF book

School Exam DB

{conversationType, select, drill_exam {Tell me the units and difficulty you want. I will help from finding problems to finishing the exam.} textbook {Tell me the units and question counts you want. I will help organize the problems and finish the workbook.} other {Tell me what you want to create. I will help from start to finish.}}

{conversationType, select, drill_exam {Shall we build a drill exam together?} textbook {Shall we build your own workbook together?} other {Shall we create something together?}}

Select a previous conversation to continue it.

Conversation history

Search status

Problem Bank AI

These students will no longer be able to access this exam or submit answers. Existing submissions will be kept.

Revoke access for {count} students?

Manage assignments

Book chat

Read problems like a workbook page and ask the AI — "pick 5 easy problems" — to choose for you.

Book chat view is new

Book chat counts toward your Questi usage, so it is not available on the Free plan.
Credits alone do not unlock it.

Available on Basic and above

Active tasks

Top up your usage or upgrade your plan to keep using book chat.

Your Questi usage is used up

Try changing folder/tab/search conditions
or create a new DB.

No items match your conditions

No public problems match your current conditions.

No public DB problems to show.

Select one to add it to the active condition group.

Frequently used conditions

All conditions within a group must match; matching any one group is enough.

Problem search conditions

Choose where to search first. The conditions below apply within the selected database.

Search scope

Problems or folders you share will appear here.

No shared-by-me problems.

Problems or folders shared by others will appear here.

No shared-with-me problems.

Title

Select Yes to apply your changes, or No to close without applying them.

Apply the changes to your problem search conditions?

Locked problem

Exams used in (most recent)

Untitled exam

Choose candidates to create your own exam.

You have {count} exam candidates!

{itemCount} candidates · {selectedCount} selected

Create exam

You can register problems from the My DB card menu.

No community problems yet.

You can register your exams from the exam history page.

No community books yet.

Other users can save this problem to their DB for free.

Other users can save this exam and its problems for free.

Other users can save this problem to their DB after paying the credits you set.

Other users can save this exam and its problems after paying the credits you set.

Free items can be copied immediately. Paid items charge the buyer and credit the seller when purchased.

Choose whether other users can copy this problem for free or by paying credits.

Choose whether other users can copy this exam and its problems for free or by paying credits.

Register exam to Community DB

Register to Community DB

Subject

Copy problems shared by other users into your DB for free or with credits.

Community DB

Shown in the free DB for Gwangju members. It will not appear in the Jeonnam/Gwangju DB.

Standard analysis costs {standardCredit} credits per problem. Endnote-processed HWP/HWPX files cost only {endnoteCredit} credits per problem.

Credit usage

Upload the problem files you want to add to your DB.

File upload

During the event, each upload analysis type is charged at the displayed event price instead of the regular price.

Problem DB upload discount

Analysis and tagging of extracted problem-solution pairs

HWP · HWPX

The {taggingCredit}-credit tagging rate cannot be applied because this file has no endnote-paired problem and solution. Convert it to PDF and continue at the image/PDF analysis rate of {analysisCredit} credits per problem?

No endnote-paired problems and solutions found

Segmentation, analysis, tagging, and solution generation

Image · PDF

Review and select segmented image/PDF problems or problem-solution pairs extracted from an endnote-processed HWP/HWPX file.

Convert the selected pages into images and add them to the upload list.

Select PDF pages

Automatically saves successfully analyzed problems as a new exam. You can continue editing it from your exam/textbook history.

Review Segmented Problems

Only the problem will be added to the Problem DB.

Tag HWP/HWPX Problems

Review the content and select the pairs to tag.

Select HWP/HWPX Problem-Solution Pairs

When this finishes, you can choose the problems to add on this page.

{completedCount} uploaded · {failedCount} failed

DB History

{completedCount} registered · {failedCount} failed · {similarCount} Questi generated

Select Segmented Problems

This appears in public DB search and filters. Leave unknown values blank.

Source information (optional)

Add New Problems

Title (Optional)

e.g.) June 2025 Evaluation Mock Exam

Create folder

Select subject

This will delete the selected problem from My DB. You can’t undo this action.

You can’t undo this action. Continue?

Delete this problem?

Delete problems in this folder from DB and queue search index cleanup.

Delete "{folderName}". Choose how to handle {count} included problem(s).

Keep problems and move them out of the folder.

Delete folder

Problem {number}

File title

View Original Problem

Problem title

Enter problem title.

View Related Problems ({count})

The solution is being prepared. You can view it on this problem when it is ready.

Problem detail

Use filters in My Problem DB or Public Problem DB to select the options you want.

No problems selected.

Problems without solutions cannot be used in an exam or textbook. Solutions will be generated after payment, and you will move on automatically when they are ready.

We are checking progress automatically. You will move to the next step when every solution is ready.

Generating solutions for {count} problems

Choose a document type and title to create an editable draft.

Create exam/textbook

You can select up to {count} problems with the current settings.

Enter problem count

Use problems from your DB to create your own exam or textbook.