LeTianPai is a free Android app designed to facilitate control over the Rux Robot, offering essential features like pairing, binding, and network configuration. The app enhances user experience with practical functionalities, such as call and SMS reminders, which require access to the phone's contacts and notifications. Users must grant permission for these features to work, ensuring privacy and user control over data access.

The app's integration with the Rux Robot allows seamless management of notifications directly on the robot's screen. To display call notifications, the app accesses call logs and contact details, matching incoming numbers with saved contacts to provide meaningful alerts. LeTianPai prioritizes user consent, only utilizing permissions with explicit approval, thereby maintaining a focus on user privacy while enhancing the operational capabilities of the Rux Robot.