Kopfrechnen
Kopfrechnen Trainer: a mental maths app that speaks the problems
Kopfrechnen Trainer is a mental maths app for primary school children aged about 7 to 10 (school years 2 to 4 in Germany). Each problem is spoken aloud and is not shown as digits on the screen while the child works it out. The child listens, keeps the numbers in mind, calculates in their head and types only the answer. This mirrors how teachers dictate mental arithmetic in class.
Important: the app is in German. Problems, menus and help texts are German. It is made for children who learn maths in German: families in Germany, Austria and Switzerland, German schools abroad and bilingual families. It is not an English-language maths app.
Key facts
| What it trains | Mental arithmetic by ear: addition, subtraction, multiplication, division |
|---|---|
| How problems appear | Spoken only (German voice); no digits on screen while calculating |
| Levels | Over 2,400 problems in 7 freely selectable levels, from numbers up to 20 to numbers up to 10,000, including times tables and division with remainder |
| Help | Replay the problem, a short strategy hint, show the answer; no timer or countdown |
| Curriculum | Strategies from the Bavarian primary school curriculum (LehrplanPLUS): doubling, helper problems, place-value splitting, core times tables, inverse problems |
| Price | First 50 problems free, then an optional subscription of €9 per year (or local equivalent); Family Sharing on iPhone and iPad |
| Privacy | No ads, no account, no tracking, no cloud. All data stays on the device; practice works offline |
| Family | Several child profiles per device, parent area with progress charts and CSV export |
| Platforms | iPhone and iPad (App Store) · Android (Google Play) |
| Age rating | 4+ / USK 0 |
Why spoken problems?
Most maths apps show the problem on the screen. A child can then read the digits, look back and work through them almost as on paper. Mental arithmetic in school is different: the teacher says the problem, the child sees nothing and must hold the numbers in working memory. Kopfrechnen Trainer practises exactly that. Learn more: a mental maths app that reads problems aloud.
Who made it
The app was built in Bavaria by two primary school brothers and their parents, published by Drinos. There is no company server: the app works fully on the device.
When another app is the better choice
If you want a free app covering many subjects, ANTON is a common choice in German-speaking schools. If your child's class uses the textbook “Das Zahlenbuch”, Klett's Blitzrechnen app matches it. If your child learns maths in English, choose an English-language app. Kopfrechnen Trainer does one thing: German mental arithmetic by ear. A detailed comparison (in German) is on our comparison page.
Frequently asked questions
What is Kopfrechnen Trainer?
An ad-free mental maths app for children aged about 7 to 10. Problems are spoken aloud in German and are not shown as digits; the child calculates in their head and types the answer. Available for iPhone, iPad and Android.
Is the app available in English?
No. Problems, menus and help texts are in German. The app suits children who learn maths in German, for example in Germany, Austria, Switzerland or at German schools abroad.
How much does it cost?
The first 50 problems are free. After that an optional subscription costs €9 per year (or the local equivalent), with Family Sharing on iPhone and iPad. There are no ads and no other in-app purchases.
Does the app collect data about my child?
No. There is no account, no cloud and no tracking. Profiles and progress stay on the device. Internet is only used for the subscription with Apple or Google.
Does it work offline?
Yes. All problems and audio are included in the app.
Transparency: this page is written by the makers of Kopfrechnen Trainer. Corrections and questions: [email protected].