Divisible Dash Get the app Log in
App Store and Google Play, October 2026

Divisibility rules,
at arcade speed.

A number falls. The pill asks: divisible by 7? Swipe right if it is, left if it is not. Wrong answers pile up, and when the stack hits the line, the run is over. Built by a maths teacher to make the divisibility rules for 2 to 12 automatic.

Get the app Teachers: see a demo class Learn the rules
Divisible Dash mid-run on the current build: the pill asks divisible by 2, a 746 tile is falling towards the gold frame, four wrong answers sit on the stack

Divisible or not? Decide fast.

The whole game is one move. What changes is the rule in the pill and how fast the numbers come.

  1. A number falls

    The pill sets the question, like divisible by 2. Swipe right for yes, left for no. The rule changes as you play, so you can never switch off.

  2. Mistakes stack up

    Every wrong answer lands on your stack. Reach the red line and the run ends. Correct answers charge the power ring at the top right.

  3. Lightning clears the lot

    A full charge fires one strike down the stack and wipes it. That is the moment the game is built around.

  4. One Daily, same for everyone

    The Daily Challenge deals the identical run to every player in the world that day, so class and friend boards compare like with like.

A real run on the current build, Diamond skin.

The eleven tests, on real numbers.

The lit digits are the only ones the rule looks at. Each test is explained with worked examples on the rules page.

Divisible by 3

Digit sum divides by 3. 5+4+1+2 = 12.

Read the worked examples

Find the gap. Close it. Every Daily quietly records how you did on each rule. Drill Mode then takes your weakest ones and slows the game right down: no fall clock, calm 25-tile sessions, and every miss explained with the working for that exact number.

Read the rules
  • 92% correct for divisible by 2
  • 82% correct for divisible by 3
  • 74% correct for divisible by 4
  • 90% correct for divisible by 5
  • 66% correct for divisible by 6
  • 38% correct for divisible by 7
  • 51% correct for divisible by 8
  • 77% correct for divisible by 9
  • 88% correct for divisible by 10
  • 58% correct for divisible by 11
  • 69% correct for divisible by 12

Drill Mode turns the red rings blue.

This week in a demo class.

The free teacher dashboard: who topped each tier, who improved most, and the rule the room keeps getting wrong. Every student here is invented, and the demo needs no account.

Codes, not accounts. One six-character code per class, on a printable sheet for the classroom wall. Students tap Join class on the app's home screen and type it in.

Boards and insights. Daily class leaderboards per tier, plus per-rule accuracy for the class, so you can see at a glance that 8 needs another lesson.

Names stay yours. Optionally add a roster (first name and last initial only) to see who is who. Rosters are visible to you alone, under your school's authorisation.

  • KS2: Covers the Year 5 and 6 objectives on multiples, factors and divisibility, and makes recall fast enough to use.
  • KS3: Builds the fluency with factors, multiples and primes that the KS3 programme of study assumes before HCF, LCM and prime factorisation.
  • GCSE and IGCSE: Keeps divisibility instant, so simplifying fractions and factorising cost no working memory.

Weakest rule this week

÷8, 55% correct from 212 answers

Open the demo class Create a free class See a demo cup
The brief for your department Teacher FAQ Your class board

Play well, earn the look.

Forty-five skins to earn across five ladders. Diamond sits at the top of the dailies ladder. The rest reveal themselves in the game.

Circuit
Aurora
The Diamond tile skin
Diamond
The Sun
Ice Hockey
See all 45

Each ladder unlocks in order. A rung opens only after the one above it.

Dailies played

  1. Graph Paper
  2. Leather
  3. Wood
  4. Stained Glass
  5. Lava
  6. Fish Tank
  7. Coming soon
  8. Coming soon
  9. Coming soon
  10. Diamond

Correct answers

  1. Blackboard
  2. Abacus
  3. Brick
  4. Neon
  5. Titanium
  6. Coming soon
  7. Coming soon
  8. Coming soon
  9. Coming soon
  10. Circuit

Daily streak

  1. Marble
  2. Black Ice
  3. Obsidian
  4. Eclipse
  5. Storm
  6. Coming soon
  7. Dawn
  8. Gold
  9. Coming soon
  10. Aurora

Personal bests

Opens after 20 dailies

  1. Mercury
  2. Venus
  3. Earth
  4. Mars
  5. Jupiter
  6. Saturn
  7. Uranus
  8. Neptune
  9. Pluto
  10. The Sun

Friends who join with your code

  1. Squad
  2. Rugby
  3. Basketball
  4. Water Polo
  5. Ice Hockey

Screen time you can actually feel good about.

Five minutes of Divisible Dash is five minutes of mental maths at speed. It is made by a serving maths teacher, and it asks players for no personal details. Not as a policy promise, as a design fact: there is nowhere in the game for a player to type their name, email, age or anything else.

  • Every player gets a picked name like LuckyOtter31, chosen from curated word lists. No free text, no chat, no strangers.
  • No adverts, no tracking, no third-party analytics, no subscriptions. The Daily Challenge and two practice runs are free every day. One optional £4.99 unlock, paid once, opens unlimited practice and Drill Mode for good.
  • Real names only ever exist where a teacher typed them, visible to that teacher alone, with the school as data controller.

Read the full privacy policy, the Teacher Terms and the schools data-processing agreement.

Divisible Dash, quickly explained.

What are the divisibility rules?

Quick digit tests that tell you whether one number divides exactly by another, with no long division. A number is divisible by 3, for example, when its digit sum is. Every rule from 2 to 12 is explained with worked examples on the divisibility rules page.

Is Divisible Dash free?

Yes. Every day you get the Daily Challenge, the same run as the rest of the world, and two practice runs, free. Class dashboards for teachers and class boards on this site are free too. Want more than two runs? One optional £4.99 unlock, paid once, opens unlimited practice and Drill Mode for good, no subscription, ever. The app arrives on the App Store and Google Play in October 2026.

Can my school or class use it?

Yes. The teacher dashboard is free: create a class in two minutes, print the code sheet, and students join with the code, no student accounts or emails. You get daily class leaderboards and per-rule accuracy insights.

Be there for day one.

Divisible Dash lands on the App Store and Google Play in October 2026. Until then, teachers can open their free class dashboards, and telling one colleague or one class is the whole marketing plan.

Download on the App Store Get it on Google Play

Launching October 2026

Log in Spread the word

Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.