Maths practice that plays like a sport.
SumClash Learn. Duel a friend, a random opponent or Summy, our AI, in real time. Pull a group of friends into a party room. Build speed on the Human Calculator and practise for WAEC and JAMB — every result feeds one rating, your level and your badges.
- Free every day
- Plays in the browser
- Rating starts at 1500
Sign up free · I'm a parent or guardian
Who it's for: students, players — and the adults looking out for them
Students and players
Anyone who wants faster, surer maths — from times tables to quantitative reasoning — and likes having someone to beat.
Parents and guardians
Run up to four child accounts from your own, switch into any of them on your device, and see how each child is doing.
Everything a free account opens
Built around the duel: a clock, a score and a real opponent on every question.
Play
- Real-time 1v1 duels: instant matchmaking against a random opponent, a direct challenge to a friend, or an open challenge anyone can accept.
- Summy, the AI opponent: no one online? Play Summy instead and start straight away.
- 35+ maths games: Tug of War, Number Maze, Arrow Puzzle, Fraction Frenzy, Times Table Blitz, Math Minesweeper and more — some are premium.
- Group duels with friends: a party room for 2–20 players, 3–30 questions, in seven modes: Classic, Last One Standing, Hot Potato, Sudden Death, Team Battle, King of the Hill, Maths Bingo.
- Human Calculator: numbers flash one at a time; add them in your head. A placement round finds your level (1–20), then practise with your own digits, count and operations.
- Solo practice: practise a game on your own, with no opponent — practice never counts against your free games.
Progress
- One rating: everyone starts at 1500. Every rated duel moves it up or down.
- Levels and XP: playing earns XP towards your next level, with credit rewards at certain levels.
- Badges: unlock badges as you win, climb and keep playing.
- The shop: spend credits on avatars, frames, name styles, victory effects and more — or unlock a premium game for good.
- WAEC and JAMB practice: mock exams from SumClash Academy — WASSCE-style papers and JAMB UTME mocks — sat on the exam portal.
For guardians
A guardian account is a normal player account with a few extra powers.
- Up to four child accounts: create accounts for children aged 3–17 — no email or password needed for them — then choose who is playing before a duel or an exam.
- Link an existing account: already have a child on SumClash? Send a link request by username or email; the child accepts it.
- Follow progress: see each child's rating and results from your guardian dashboard, without their password.
- Under-13 safeguards: until a guardian is linked, under-13s can’t play ranked matches or open challenges with strangers, and friend requests need approval.
How it works: from sign-up to your first win
- Create a free account. A username, an email and a password. Parents can register as a guardian instead.
- Pick a game. Choose from 35+ games, or open a party room and invite friends with its PIN.
- Choose your opponent. A random opponent, a friend, or Summy the AI — the match starts in real time.
- Watch yourself climb. Every rated duel moves your rating; XP, levels and badges follow.
Pricing: free to play, every day
A free account gets a daily allowance of games that resets at midnight (Lagos time). Want more? The Play Pass removes the limit.
- Free: 10 one-on-one duels and 3 group-duel rounds a day — practice doesn’t count.
- Play Pass: ₦1,200 for 30 days — unlimited duels and group duels, plus every premium game.
- Credits: 1,200 credits for ₦500, in packs or a custom amount — for the shop, permanent game unlocks and puzzle hints.
- Under-13s can only pay through an account a guardian runs.
Questions people ask first
Is SumClash Learn really free?
Yes. A free account plays 10 one-on-one duels and 3 group-duel rounds every day, and practice is unlimited. The Play Pass (₦1,200 for 30 days) is only for people who want more.
Do I need to install an app?
No. SumClash runs in the browser on a phone, tablet or computer. You can add it to your home screen if you want it to open like an app.
What if none of my friends are online?
Use instant matchmaking to find a random opponent, post an open challenge, or play Summy, our AI opponent, straight away.
How do child accounts work?
A guardian creates up to four child accounts from their own account — the child needs no email or password. You switch into a child’s account on your device to let them play, and switch back when they’re done.
What is a group duel?
A party room for 2 to 20 players. The host picks the topics, the number of questions, the time per question and one of seven modes — Classic, Last One Standing, Hot Potato, Sudden Death, Team Battle, King of the Hill or Maths Bingo — and shares the PIN.
Is SumClash connected to WAEC or JAMB?
No. The mock exams are practice written to the WASSCE and UTME formats; SumClash is not affiliated with WAEC, JAMB or any examination body.
Your rating starts at 1500.
Make a free account and play your first duel in a minute — or register as a guardian and set up your children's accounts.
The other three doors
SumClash Live: A live maths quiz on the big screen
Your organisation hosts, everyone plays from their own phone with a 6-digit PIN — no app to install. Quiz rounds or Human Calculator rounds.
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.