Example methods and apparatus to detect uninstallation of an on-device meter are disclosed. An example apparatus includes means for detecting that an application is to be uninstalled from the mobile device, the application to gather status information of the means for detecting to ensure that the means for detecting is installed, the application to transmit status information to a data collector. The apparatus includes means for displaying a prompt regarding whether the means for detecting is to be uninstalled when the application is to be uninstalled, the means for displaying to instruct a package manager to remove the means for detecting from the mobile device. The apparatus includes means for communicating an uninstallation notification to the data collector when the application is to be uninstalled, the uninstallation notification to enable identification of a panelist associated with the mobile device.