Plain-language version. Last updated August 2026.
Your email (for sign-in), the lessons and content you create, voice recordings you submit for cloning (with your logged consent), and basic usage needed to run quotas and keep the service working.
Nothing. Students open published lessons through a link, with no accounts, no names, no tracking identifiers. Anything a student types into a lesson (answers, writing practice) stays in their browser and is never sent to our servers.
When you use AI features, the content you submit (a worksheet PDF, a prompt) is sent to our AI providers to generate lesson material. When you generate natural audio, lesson text is sent to our speech provider and the resulting audio files are stored so lessons play instantly. Your cloned voice exists as a voice model with our speech provider, scoped to your account with us.
We don't sell your data, don't run ads, and don't use your lessons or voice to train AI models.
Delete a lesson and its content is removed. Request account deletion and we remove your profile, lessons, voice clones, and generated audio.
Privacy questions or deletion requests: contact the operator through the address provided at signup.
See also our Terms of Service.