Products

From a single tap on a question to a whole class

One platform, three parts: students practise and read with PDF-Tutor and the Reading Room, teachers run classrooms, manage students and follow usage in the Teacher Console, and administrators build the exam bank in the admin center.

  • 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

PDF-Tutor

Three steps to being guided

No retyping questions, no copying and pasting between windows.

  1. Open a homework PDF

    Drop your homework PDF into the browser and every page is laid out in one scroll. You can also photograph pages with your phone and send them to your computer — each photo becomes a page.

  2. Tap the question you are stuck on

    The AI reads page images, so scans, handwriting and math all work. Hint mode guides you step by step; switch to full solutions whenever you like.

  3. Ask follow-ups and confirm you got it

    Ask as many follow-up questions as you need, or attach a photo of your own work and the AI points out the first mistake. You decide when something is understood — it is never marked automatically.

AI technology & development

From product development to educational possibilities

We currently use Claude to support product development and are exploring its potential for future educational features.

Today: development support

Claude helps our team develop and improve the product. This is part of our development workflow; educational uses of the Claude API within the product are still under evaluation.

Looking ahead: educational evaluation

We are exploring question explanations, feedback on students’ work and reading assistance, with evaluations of response quality, speed and cost. For features involving direct interaction by minors, we will first assess age-appropriate use, content safety and data handling. There is no confirmed integration timeline.

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