Look and think
A sum, a clock, or part of a circle? Every route brings eight little challenges.
A BIG WORLD OF LITTLE DISCOVERIES
Little steps.
Big
discoveries.
Math begins with curiosity.
Join Otto on a journey where every answer builds another piece of the road.
Download on the App StoreFor iPhone and iPad
Available on the App Store
Available on the App Store
No adsNo accountAt your own pace
01 / THE ADVENTURE BEGINSOne answer. One step forward.
A little counting.
A lot of discovery.
9books to explore
540little routes
∞chances to try again
LEARNING THAT MOVES YOU FORWARD
One answer.
A whole adventure.
A piece of Otto’s bridge is missing. The right number helps him move forward. That is how a little task becomes a big “I did it!”.
Choose an answer
Fill the gap with a number. Otto will check whether it fits by driving over it.
Keep exploring
Got it? Let’s go! If not, there is room for another try and a new discovery.
A LITTLE LIBRARY. A BIG WORLD.
Today…
where shall we go?
From first sums to clocks and fractions. Nine books to explore at your own pace. Choose a topic and take a peek inside.
TAKE A PEEK INSIDE
Addition
Two little numbers, one new discovery. Choose the answer and help Otto build the next piece of the bridge.
Actual app screen in English · Addition
In every book: 60 routes · 5 difficulty stagesThe first 5 routes are free. Return as often as you like.
PLAYTIME YOU CAN FEEL GOOD ABOUT
For little explorers.
And peace of mind.
Room to focus, stay curious and try independently. With simple rules grown-ups appreciate too.
Just Otto
and little discoveries.
No ads and no account to create. The adventure can begin right away.
One more try?
Of course.
Routes can be repeated. Fresh sets of questions offer another chance to practice.
Little achievements.
They stay with you.
Progress is saved on your device. Purchases are behind a parental gate.
FROM THE SCREEN INTO YOUR WORLD
This adventure
fits right
in your room.
AR
Place Otto’s paper road in your surroundings and see math from a new perspective.
On compatible devices, augmented reality brings play into your room. Prefer to stay on screen? The adventure continues without the camera.
AR requires a compatible device and camera permission.What can we try for free?
The first five routes in each of the nine books — 45 routes in total. Repeat them as often as you like. Each route has eight questions.
What is Otto Plus?
Otto Plus unlocks all 540 routes. Choose monthly access, annual access or a one-time lifetime purchase in the app. Every option includes the same content. Current prices are shown before purchase, behind the parental gate.
Which devices does the app support?
Otto Math is for iPhone and iPad with iOS / iPadOS 18 or later. Optional AR requires an ARKit-compatible device. Regular play does not need the camera.
Do we need an account or internet connection?
No account is needed. Questions and progress work locally. Internet access is needed to download the app and make or restore purchases through Apple.
Which currency does Otto teach?
The Money book uses Polish złoty (PLN), even when the app language changes.
What happens after a wrong answer?
Otto shows that the chosen block does not fit, and you can try again. A third mistake restarts the current route. There is no limit on retries.
LITTLE JOURNEYS. BIG DISCOVERIES.
Ready for your first
“I did it!”?
Start your first math adventure with Otto. Download the app and explore the free routes.
Download on the App StoreiPhone and iPad · First 5 routes in each book free