Privacy Policy

Kernly -- German Language Learning App | Effective: April 10, 2026

Who We Are

Kernly is a German language learning app for iOS developed by Illia Davydiuk, an individual developer. If you have questions about this policy, contact us at kernly.app@gmail.com.

What Data We Collect

We collect only the data necessary to provide and improve the app:

• Email address -- used for account creation and communication.
• Learning progress -- your completed lessons, scores, and streaks, used to personalize your experience.
• Subscription status -- whether you have an active subscription, managed through RevenueCat.

How We Use Your Data

Your data is used to operate the app, track your learning progress, manage your subscription, and improve the service. We do not sell your data to third parties.

Third-Party Services

Kernly uses the following third-party services:

• RevenueCat -- handles in-app subscriptions and payment processing. RevenueCat receives your subscription and transaction data. RevenueCat Privacy Policy.
• Sentry -- collects crash reports and performance data to help us fix bugs. No personal content is included in crash reports. Sentry Privacy Policy.
• OpenAI API -- generates and grades language learning tasks. Text you submit for grading is sent to OpenAI for processing. OpenAI Privacy Policy.

Data Storage and Security

Your data is stored on secure servers with appropriate technical and organizational safeguards. We retain your data for as long as your account is active or as needed to provide services.

Your Rights (GDPR)

If you are located in the European Economic Area, you have the right to:

• Access the personal data we hold about you.
• Request correction of inaccurate data.
• Request deletion of your data.
• Object to or restrict processing of your data.
• Request data portability.

To exercise any of these rights, contact us at kernly.app@gmail.com.

Account Deletion

You can request deletion of your account and associated data directly from within the app. Upon deletion, your personal data will be permanently removed from our servers within 30 days.

Children's Privacy

Kernly is not directed at children under 13. We do not knowingly collect personal data from children under 13. If you believe a child has provided us with personal data, please contact us and we will delete it.

Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated effective date. Continued use of the app after changes constitutes acceptance of the revised policy.

Contact

For questions or concerns about this privacy policy, reach out to:

Illia Davydiuk
kernly.app@gmail.com