How a small maths practice app became a curriculum-aligned learning platform for children at German international schools, with motivation children understand and insight parents can act on.
A father, a daughter, and a maths problem
Kabutschi did not begin with a market analysis or a plan to build an education company. It began at home. I wanted to develop an app that would help my daughter practise maths in a way that felt clear, relevant, and manageable.
The problem was familiar to many parents. There was no shortage of worksheets, videos, or learning apps. The shortage was in fit. The material often did not match what she was learning at school, the feedback rarely showed where she was actually struggling, and practice could easily become another argument between parent and child.
So the first version had one simple job: give my daughter the right maths exercises and help her practise without turning every session into a negotiation.
The question that changed the product
As the app became part of her routine, she saw something I had not yet allowed myself to see. This was no longer only a small tool made by a father for his daughter. It could help other children facing the same frustration.
Her question was direct: if it helped her learn, why should we keep it to ourselves? That changed the product. The standard could no longer be whether the app worked for one child in one subject. It had to be understandable, dependable, safe, and useful for many families.
“Why don’t we let other children use the app, so they can learn just as well as I can?”
From a maths tool to a learning platform
Kabutschi grew around the real school day. It now supports children in grades 1 to 7 at German international schools in Egypt, with curriculum-aligned practice based on the Thüringen and Sachsen curricula for primary school and Gymnasium. Maths became part of a broader set of school subjects rather than an isolated exercise bank.
Parents can enter an upcoming class assessment and direct practice toward the relevant topics. Kabutschi shows what has already been covered and where more work is needed. Progress follows the child across tablet, phone, and computer through cloud sync, so a short session at home and another while travelling remain part of the same learning record.
The aim is not to reproduce school on a screen. It is to make the next useful step obvious: the right subject, the right topic, and a practice session short enough to complete with focus.
The pain generic learning apps leave unresolved
Many learning apps are built for the widest possible audience. That makes them rich in content, but it can leave a parent or child with the hardest question unanswered: what should we practise today for what is actually happening at school?
A broad topic library still requires someone to translate the school curriculum into a study plan. A colourful progress score may show activity without explaining the pattern behind the mistakes. Gamification can increase time in an app without improving readiness for the next class assessment.
Kabutschi takes the opposite starting point. It begins with the child’s grade, curriculum, subjects, and upcoming assessments. Motivation and analysis are then built around that context.
| Common learning-app model | Kabutschi |
|---|---|
| A broad library of general topics | Practice aligned to the child’s grade and supported school curriculum |
| The child or parent searches for what to practise | Assessment dates and relevant topics guide the next session |
| One overall score or time-spent metric | Per-subject accuracy, error rate, activity, and visible strength and weakness patterns |
| Rewards designed to keep the session going | Short practice, effort-based rewards, parent controls, and a clear stopping point |
| Privacy and advertising models vary by provider | No advertising in the learning area, no child tracking, and parent-controlled accounts |
What Kabutschi gives a child
For a child, the most important benefit is not the dashboard or the curriculum database. It is the feeling that the work makes sense. The exercise connects to school, the next goal is visible, and progress arrives in small steps rather than as a distant final grade.
Kabutschi is designed for focused sessions of roughly 10 to 15 minutes. There is no endless feed and no pressure to stay inside the app. A simple username and PIN make it easy for a child to start independently on any device.
- Exercises that match the supported German school curriculum and the child’s grade.
- Focused preparation for upcoming class assessments instead of random topic practice.
- Stars for sustained effort, a daily streak that resets without guilt, and an optional digital piggy bank connected to a reward budget set by the parent.
- A short Memory break after a run of correct answers, with the option to skip it and continue.
- An anonymous weekly ranking that shows progress without exposing children’s names.
- A dedicated assessment mode where the subject matter matters more than reward levels.
- Cloud-synchronised progress across tablet, phone, and computer.
The child should leave a session knowing what they achieved, not feeling that the app found another reason to keep them on the screen.
What the parent dashboard makes visible
Parents usually receive learning feedback too late. A class assessment comes back, a grade reveals the result, and only then does the family discover that a topic was never fully understood. The Kabutschi parent dashboard is designed to move that moment forward.
Instead of reducing progress to one percentage, the dashboard keeps the analysis close to the school reality. Parents can see performance by subject, accuracy and error rates, daily activity, learning time, upcoming assessment dates, and patterns of strength and weakness. That makes the next conversation more specific. “Why are you not studying?” can become “Fractions are improving, but decimals need another short session before Tuesday.”
The dashboard also gives parents control over the motivation system. They set the monthly reward budget, decide when the piggy-bank amount is paid, and can use calm mode to pause rewards. Multiple child profiles can be managed from one parent account.
- Subject-level progress rather than a single generic score.
- Accuracy, error rate, daily activity, and learning-time visibility.
- Early signals of strengths and recurring weak areas.
- A calendar for upcoming class assessments and targeted preparation.
- Parent-controlled rewards, payout decisions, and calm mode.
- One account for managing more than one child.
Privacy is part of the product
A learning product for children should collect less, not ask families to accept more. Kabutschi stores the minimum needed for the learning experience: a first name, grade, curriculum, and practice progress. It does not need a child’s surname, photograph, location, camera, or microphone.
There is no advertising in the learning area, no child tracking, and no sale or sharing of child data for marketing. The parent controls the account. These choices are not a compliance footnote. They shape the kind of relationship a family can have with the product.
The product still follows her question
Kabutschi has grown far beyond the maths app I first imagined. But the product test remains the same one my daughter gave me: does this help another child learn with more clarity, confidence, and independence?
For children, that means relevant practice, visible progress, and motivation without pressure. For parents, it means seeing what is happening early enough to help. For us, it means building the product as carefully for every family as I wanted it built for my own daughter.