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Questi
Seongnam-si, Gyeonggi-do, Republic of Korea
What it is
Questi is a study platform for asking questions, getting explanations, and creating practice material. Users can upload an image of a problem to receive an explanation, ask follow-up questions, or request similar problems. Its AI teachers focus on complex logical reasoning, particularly in math, physics, and engineering; Kedu is described as a teacher for K–high school students, while Anser answers everyday questions. The site lists study tools including Book Chat, Library, Lecture Chat, exam and similarity analysis, document conversion, vocabulary, and essay correction. Cramming uses textbook PDFs or images to produce multiple-choice, short-answer, or mixed question sets, with adjustable count and difficulty; generation takes approximately 5–7 minutes. Other listed features include written-response authoring and grading, drill exams, solution videos, handwritten solutions, and educational materials. A free plan is available, as are paid monthly plans. AI Teacher use has a monthly time maximum, and additional features use credits; the plans page estimates 1,500 credits at approximately $1 using an exchange basis of $1 = 1,500 KRW, which may vary with market rates. Login is required for all services, and AI-generated content may be inaccurate.
For and against
For
- Free plan is available.
- Accepts problem images and textbook PDFs.
- Includes practice generation with adjustable count and difficulty.
- Lists tools for several subjects and study tasks.
Against
- Login is required for all services.
- AI-generated content may be inaccurate.
- AI Teacher time is capped monthly by plan.
- Cramming generation takes approximately 5–7 minutes.
The verdict
Questi offers question help and a broad set of study and practice tools, with free and paid plans. Users should review generated answers carefully and check plan limits and credit costs.
Who it suits
Questi suits learners who want to ask questions about problems, generate practice, or use study tools across subjects. It may also suit schools and academies seeking a separate inquiry about MOU plans.
Plans and prices
Addon T
Automatic monthly $3.27 credit recharge · 25% discount on additional feature fees · non-refundable · cannot resubscribe for 3 months after cancellation
Read 7 Oct 2026 · questi.kr
Basic
AI Teacher time is a monthly maximum; additional features use credits
Read 7 Oct 2026 · questi.kr
Plus
AI Teacher time is a monthly maximum; additional features use credits
Read 7 Oct 2026 · questi.kr
Super
AI Teacher time is a monthly maximum; additional features use credits
Read 7 Oct 2026 · questi.kr
Premium
AI Teacher time is a monthly maximum; additional features use credits
Read 7 Oct 2026 · questi.kr
On the record
- AI accuracy
- The site warns that AI-generated content may be inaccurate and asks users to review it carefully.questi.kr · read 7 Oct 2026
- AI teachers
- Questi specializes in complex logical reasoning, especially in math, physics, and engineering; Kedu is described as a teacher for K–high school students, and Anser answers everyday questions.questi.kr · read 7 Oct 2026
- Company
- The site identifies BNZ.Corp and lists its address as 307, 97, Baekhyeon-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea.questi.kr · read 7 Oct 2026
- Cramming
- Cramming lets users upload a textbook PDF or images and generate questions, with multiple choice, short answer, or mixed question types and adjustable question count and difficulty.questi.kr · read 7 Oct 2026
- Credit pricing
- The plans page says 1,500 credits are approximately $1, that its displayed credit amounts use an exchange basis of $1 = 1,500 KRW, and that the rate may vary with market rates.questi.kr · read 7 Oct 2026
- Education customers
- The plans page says school and academy MOU plans are available by separate inquiry.questi.kr · read 7 Oct 2026
- Generation time
- The Cramming page says problem generation takes approximately 5–7 minutes.questi.kr · read 7 Oct 2026
- Login requirement
- The subscription guide says login is required for all services.questi.kr · read 7 Oct 2026
- Plan limits
- The plan guide says AI Teacher time is the maximum monthly usage time and additional features can be accessed using credits, with fees varying by subscription plan.questi.kr · read 7 Oct 2026
- Platform availability
- The opened product and plan pages are web pages, and the plans page refers to using BookChat on the web and a downloaded version without specifying its operating system.questi.kr · read 7 Oct 2026
- Problem solving
- Users can upload an image of a problem to receive a detailed explanation, ask follow-up questions, and request similar problems.questi.kr · read 7 Oct 2026
- Question generation
- The site also lists tools for written-response authoring and grading, drill exams, solution videos, handwritten solutions, and educational materials such as workbooks, eBooks, and presentations.questi.kr · read 7 Oct 2026
- Study tools
- The site lists Book Chat, Library, Lecture Chat, exam analysis, exam similarity analysis, document conversion, similar problem generation, English vocabulary, cramming, and essay correction.questi.kr · read 7 Oct 2026
- Support
- The site lists [email protected] as its customer service contact and directs refund inquiries to customer support.questi.kr · read 7 Oct 2026
