芥末唱 is a specialized choral teaching application designed for iPhone users, offering a unique platform for enhancing vocal skills and music theory knowledge. The app integrates popular choral materials, particularly aimed at children's choirs, making it an essential tool for educators and choir members alike. Utilizing advanced AI technology, 芥末唱 provides precise technical scoring, enabling users to improve their pitch and rhythm abilities effectively.

The app operates on a subscription model, with an initial one-year free trial followed by a monthly fee of 30 yuan. Users can manage their subscriptions through their iTunes account, including options to cancel automatic renewals. 芥末唱 emphasizes user privacy and provides detailed user agreements accessible via its website, ensuring transparency in its operations.