OTTO MATH
Terms of use
Otto Math is an educational app by Krzysztof Guz. These terms describe how the app and Otto Plus purchases work. Purchase decisions are made by a parent or guardian.
App license
Use of the app downloaded from the App Store is governed by Apple’s Standard End User License Agreement (EULA). This page adds information about Otto Math; it does not replace that agreement with a custom license.
Free routes
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.
Payments and renewals
Payment is charged to your Apple Account when the purchase is confirmed. Monthly and annual subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel subscriptions in your Apple Account settings. Lifetime access is a one-time purchase.
Buying lifetime access does not automatically cancel an existing subscription. If you switch to lifetime access, check your previous subscription in Apple settings.
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.
Progress and changing devices
Progress is stored locally, separately for each book. There are no accounts or app-managed progress sync between devices. Deleting the app removes local progress. Restoring purchases unlocks paid routes but does not restore completed routes.
Contacting support
Contact us about app issues. You can request a refund for an App Store purchase through Apple’s service: Request a refund from Apple.
This information does not limit consumer rights under applicable law.