How Korbis Uses Artificial Intelligence

Last updated: 11 June 2026 · The Czech version is authoritative; this translation is provided for convenience.

We want parents to know exactly where their child encounters algorithms and AI in Korbis. Below we describe the main ways Korbis uses algorithms and AI as of the last update of this page.

1. Adaptive Difficulty Selection (Profiling)

The app continuously estimates how well the child masters individual skills and selects the next exercises and their difficulty accordingly. For adaptive difficulty selection we use no generative AI – we use proven statistical methods backed by decades of learning research.

What it affects: only which exercise comes next and how difficult it is.
What it does not affect: no decisions with legal or similarly significant effects – no grades, no recommendations to schools, no access restrictions. All content remains available; the profile exists only so exercises are neither boring nor frustrating.
Where it runs: exclusively on our server in the EU. We do not pass the profile to third parties for their own purposes; it is processed only within infrastructure operated for us by contracted processors.

This is "profiling" within the meaning of GDPR Art. 4(4), based on performance of a contract. It is not automated decision-making under Art. 22 GDPR.

2. Voice (Read-Aloud and Pronunciation)

Exercise read-aloud uses a synthetic voice from our contracted voice-service provider. We send only the exercise text – never a name, nickname, or any data about the child.
Pronunciation practice temporarily sends the microphone recording to our contracted voice-service provider for transcription. After transcription we do not store the recording permanently and do not use it for any other purpose.

Because voice features are provided by an external supplier, processing may, depending on that supplier's infrastructure, involve transfers outside the EU/EEA. The specific providers, the safeguards used, and retention periods are listed in the Privacy Policy.

3. Exercise Quality Control (Outside the App)

Before exercises enter the app, we check their quality with, among other tools, an external generative language model. We send the supplier no data about children and no data from a child's use of the app – the check runs exclusively on exercise content, outside the app and before the content is published.

4. What Is NOT in Korbis

no chatbot or open-ended conversation between the child and AI,
no runtime AI generation of exercises (exercises are generated deterministically and reviewed),
no face or emotion recognition, no biometrics,
no advertising or third-party content recommendation,
no dark patterns: we audit gamification mechanics against Art. 5 of the EU AI Act (prohibition on exploiting children's vulnerabilities) – as of the last update of this page, we assessed all such mechanics as compliant.

5. EU AI Act Classification

Korbis is a study aid for home use (direct-to-consumer). The adaptive algorithm does not evaluate learning outcomes for an educational institution, so it is not a high-risk system under Annex III(5) of the AI Act. This classification reflects our current use of the product – we will reassess it if features, the target market (e.g. offering the service to schools), or the interpretation of the law change.

Questions: podpora@korbis.cz · Privacy Policy

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