Education Technology

Cyber Tutor賽先生

Turn every textbook
into a personal tutor.

We build AI learning tools for schools, teachers and students. From PDF-Tutor, which explains any homework question with a tap, to Teacher Console for building exam banks and managing students, we help teaching and learning focus on what matters.

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See it in action

PDF-Tutor in 30 seconds

Open a homework PDF and tap a question. The AI tutor guides you step by step in hint mode, and you can keep asking follow-up questions.

The name

Mr. Democracy and Mr. Science

In China’s May Fourth Movement of 1919, reformers nicknamed democracy 德先生 — “Mr. Democracy” — and science 賽先生 — “Mr. Science”. We borrowed the latter as our name and as a promise: bring the rigor of science and the patience of a good tutor to every student. Our English name, Cyber Tutor, echoes its sound — a tutor for the digital age.

Who we serve

Designed for every role in the classroom

One set of tools, each part working where it matters most.

  • Schools & institutions

    Adopt a consistent, manageable AI learning environment with sound data governance.

  • Teachers

    Spend less time on prep and grading, and see every student’s progress at a glance.

  • Students

    Ask whenever you’re stuck and get guided to the answer — not just handed it.

Products

Built around teaching and learning

Every product starts from a real classroom need and evolves together with teachers.

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  • Available

    PDF-Tutor

    AI homework explainer

    Open a homework PDF, tap a question, and an AI tutor walks you through it — follow-up questions welcome.

    The cloud version needs an invite code to create an account — ask your school or administrator, or write to us.

    • Tap any question to get an explanation — works with scans, handwriting and math
    • Hint mode guides you step by step, or switch to full solutions with self-checks
    • Attach a photo of your work and AI points out the first mistake
    • Mistake notebook, progress tracking and exportable notes for review
    Built forStudentsTeachers
    Open appEnquire or book a demo
  • Available

    Teacher Console

    Classrooms & admin center

    Teachers set up classrooms, create student accounts in bulk and follow usage; administrators oversee every account and build the exam bank.

    • Set up classrooms and create student accounts in bulk from seat numbers and names — download or print the sign-in slips
    • Enable or disable students in bulk and see each student’s AI usage today and over the last 7 days
    • Administrators can upload exam PDFs — AI helps split questions, extract answers and tag topics, and everything is reviewed before it goes into the exam bank
    • The admin center shows every account and its AI usage with CSV export; every read-only view of student work is logged
    Built forTeachersSchools
    Enquire or book a demo
  • In beta

    Reading Room & Exam Bank

    PDF-Tutor extensions

    From reading textbooks to practising past papers, all in one place.

    Part of PDF-Tutor at the same address; the exam bank requires signing in to the cloud version.

    • Reading room for textbooks up to 300MB, with highlights, notes, bookmarks and contents
    • Look up selections and read side-by-side translations with fixed terminology
    • Exam bank: filter papers by exam and topic, practise whole papers or single topics
    • Official answers stay hidden until you reveal them; hint mode never gives them away
    Built forStudents
    Open appEnquire or book a demo

  • More in development

    We’re building more tools for educators. Get in touch for early access or to join a pilot.

    Get early access

Our commitments

A partner you can trust in education

  1. Built with educators

    We design alongside teachers, so features fit real classrooms rather than technology for its own sake.

  2. Privacy by design

    Student data is used only to provide the service, in line with Taiwan’s Personal Data Protection Act, with clear access controls.

  3. Guide, don’t replace

    AI is there to guide students’ thinking and build understanding — not to do the learning for them.

Ready to make teaching easier?

Whether you’re evaluating adoption, want a demo, or are exploring a partnership, we’d love to talk.

Contact ussales@twctchem.com