Help centre

Plain guides to every part.

Accounts, classes, the tools, homework, billing and privacy, written for students, teachers and parents.

Find a guide

What are you trying to do?

19 guides

For students

4 guides

  • Getting started

    Create your account, set your country, province and grade, and load your syllabus.

    Students, Teachers

  • Doing your homework

    Open the assignment, edit your own copy of the document, add a note, and submit it back.

    Students

  • Joining a live quiz

    Type the join code your teacher shows on the board, or open the link they send. No installs.

    Students

For teachers

13 guides

  • Getting started

    Create your account, set your country, province and grade, and load your syllabus.

    Students, Teachers

  • Online Office Suite

    Documents, spreadsheets and slides: how to create, save, send to a class and review submissions.

    Teachers

  • Open from Google Drive

    Connect Drive, browse your files, and import a Doc or Sheet into your KMF library, fully editable.

    Teachers

  • Virtual graph paper

    Square, dotted, isometric, polar or Cartesian: pick the paper, sketch with snap-to-grid, plot by coordinate.

    Teachers

  • Graph homework workflow

    Build a starter graph, write the prompt, send to a roster, review submissions side by side.

    Teachers

  • Map and diagram annotator

    Drop a map (or any image), tap to add labelled pins, draw arrows for trade routes or process flows.

    Teachers

  • Chart builder

    Type or paste rows of data, choose bar, line or pie, set labels, project a clean chart on the board.

    Teachers

  • Quadrilateral explorer

    Drag any vertex to morph the shape; watch sides, angles, perimeter, and area update live.

    Teachers

  • Classroom noise meter

    Project bouncing balls that react to room volume, with a friendly nudge when the class goes above your quiet line.

    Teachers

  • Classroom timer

    Countdown with eight end-of-time tones: soft bell, chime, gong, ding-dong, triangle, wood block, beep and shh.

    Teachers

  • AI quizzes and live games

    Type a topic, let AI draft questions, run a live game with a join code or assign as homework.

    Teachers

  • Office assignments

    Send a document to one student, the whole class, or the open link. Read submissions in your inbox.

    Teachers

For parents

1 guide

For everyone

2 guides

  • Plans and billing

    The Free plan that stays free, Plus with 30 days free, and how refunds work.

    Students, Teachers, Parents

  • Privacy and your data

    What we collect, what we do not, and how to download or delete your data at any time.

    Students, Teachers, Parents

Billing

How billing works.

From the free month to a refund, in order. The billing guide answers the common questions with worked examples.

  1. Your free month starts

    Every new account gets 30 days of Plus free. You don't need a card to start.

  2. Add a card, if you like

    Any time during the free month you can add a card so Plus carries on without a break. Nothing is charged until the free month ends, and you can cancel before then to pay nothing.

  3. The free month ends

    With a card, the first charge happens that day and Plus carries on. Without one, you move to Free (three lesson videos a day, your teacher's quizzes and homework, the Brain Zone games) and nothing you made is lost.

  4. Plus renews by itself

    Plus is $12.99 a month, or $7.60 a month billed as $91.20 once a year (prices in USD). It renews at the same price until you cancel.

  5. Cancel any time

    Cancel from Account, in Plan and billing. Plus stays until the end of the time you paid for, and nothing more is charged after that.

  6. Refunds

    Ask for a refund within 30 days of your first charge and the money goes back to your card, as long as you chose Plus in the first two days of your free month. The free month is the time to try everything, so a later choice, or a card added during the free month, is not refunded.

  7. Something unusual?

    If your case does not fit these rules, write to [email protected]. We look at every case ourselves, for example a refund for the months left on a yearly plan.

Read the billing guide

Still stuck

Write to us, and say which page you were on.

If a guide does not answer your question, a message to us does. Questions about a plan or a refund and the rules we keep about your data have pages of their own.