Terms of Use

1. Service

Derso is a learning platform offering AI-powered voice lessons, interactive study sessions, and level exams. By using the service, you accept these terms. If you are under 18, you must use the service with parent or guardian approval.

2. Account

You are responsible for your account security. Account sharing, bulk automated access, and abuse of the service may lead to account suspension.

3. Beta and pricing

During beta, the service is offered with free quotas. When paid plans go live, prices and quotas will be published on the Plans page; you may cancel a subscription at any time.

4. Content and intellectual property

Lesson content, voices, and platform software belong to Derso and may not be copied or distributed outside personal learning. AI-generated content may contain errors and is not professional advice.

5. Certificates and exams

Level exam results and certificates are issued under derso's own assessment criteria and are not official or accredited documents.

6. Limitation of liability

The service is provided as is. Derso is not liable for indirect damages from interruptions or content errors; mandatory consumer rights remain reserved.

7. Changes and termination

Terms may be updated; material changes will be announced. You can close your account at any time from Account -> Delete my account.