Put a live maths quiz on the big screen.

SumClash Live. Your organisation hosts from its dashboard; players join from their own phones with a 6-digit PIN or a QR code — no app to install, no account to create. Run quiz rounds from your question bank, or a Human Calculator round where numbers flash one at a time.

Join with a PIN · Host a live quiz

Who it's for: anyone with a room full of people and a screen

Schools and teachers

Quiz a class or a whole assembly on today’s topic, or run a mental-maths competition between classes.

Businesses and trainers

Check what a training session actually landed, or run a quiz night that everyone can join from their seat.

Clubs, churches and NGOs

Events, youth programmes and competitions — anyone with a phone can play along.

Built for a room, run from one screen

Two kinds of session

  • Quiz sessions: questions come from your own question bank — single-answer multiple choice, true/false and numeric answers.
  • Human Calculator sessions: numbers flash one at a time; players add them in their heads and type the total on their phones. 1 to 50 rounds per session.
  • Your pace: set 5 to 120 seconds per question (20 by default). The host moves the session on.

Joining

  • 6-digit PIN or QR code: players type the PIN at sumclash.com/join, or scan the QR code on your screen.
  • No app, no sign-up: it runs in the phone’s browser. Players pick a nickname and they’re in.
  • You decide who plays: approve each player as they arrive, or switch on auto-approve. Remove anyone at any time.

Scoring

  • Live leaderboard and podium: scores and streaks update after every question; the top 10 show on the big screen and the winners get a podium.
  • Everyone sees their place: each phone shows the player’s own rank, not just the top of the table.
  • Answer breakdown: see how the room answered each question — useful when a class gets one badly wrong.

How it works: from sign-up to podium

  1. Register your organisation. Create your organisation account on SumClash; you manage everything from your organisation dashboard.
  2. Create the session. Give it a title and choose quiz or Human Calculator, then pick questions from your bank and set the timer.
  3. Players join. Put the PIN and QR code on the big screen. Players join from their phones and you let them in.
  4. Play it live. Run the questions; the leaderboard updates after each one and the podium closes the session.

Pricing: included in organisation plans

Live sessions come with a paid organisation plan, alongside everything in SumClash Exam. The plan sets how many players can join one session.

  • Starter — ₦15,000 a month: up to 50 players per session.
  • Premium — ₦45,000 a month: up to 300 players per session.
  • Enterprise — arranged with our team: no player cap.
  • Pay yearly and get 12 months for the price of 10. Players never pay to join.

Register your organisation

Questions people ask first

Do players need a SumClash account?

No. They open sumclash.com/join on any phone, type the PIN (or scan the QR code) and choose a nickname. A player who already has an account can use it.

How many people can play at once?

Up to 50 players per session on Starter, up to 300 on Premium, and no cap on Enterprise.

Where do the questions come from?

From your organisation’s own question bank — the same banks you use for SumClash Exam. Multiple choice (one answer), true/false and numeric questions can be used live. A Human Calculator session generates its numbers for you.

Can a student or player host a live session?

Live sessions are hosted by organisations. Players who want to play with friends can open a group duel for 2 to 20 people in SumClash Learn.

What do I need in the room?

A screen everyone can see — a projector, TV or smartboard — showing your session, and players with a phone and an internet connection.

Got a PIN? You're one step away.

Joining takes a PIN and a nickname. Hosting takes an organisation account.

Join with a PIN · Host a live quiz

The other three doors

SumClash Learn: Maths practice that plays like a sport

Real-time 1v1 duels, group duels with friends, 35+ maths games and exam practice — with a rating, levels and badges. Guardians can run up to 4 child accounts.

SumClash Lab: Ask any maths question and watch it solved

Type or snap a question and see it worked out step by step, with the graph or picture beside it. Lessons, practice, interactive labs and Summy, the AI tutor.

SumClash Exam: Your own online exam portal

Question banks, timed assessments, candidate management, proctoring, results and verifiable certificates — on a portal with your name and colours.

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