Email support@mindmath.org with the device type, app version, and a description of the problem. Do not include a child's full name, voice recording, photo, school, location, or contact information.

Voice Coach and friend codes require separate verified grown-up approval for each learner. If approval is incomplete, return to Profiles and choose Grown-up approval. These features remain unavailable whenever the consent or production service configuration cannot be verified.

Send privacy and deletion questions to privacy@mindmath.org. Number Sense has no chat, advertisements, public directory, or open matchmaking. Premium billing is handled by the App Store or Google Play and can be restored or managed from Learner Profiles.