People reported that the 'MassNotify' app appeared on their phones mysteriously without them opting in to the feature.

The app tracks people's movements and issues notification alerts if a possible exposure to COVID-19 happens.

Writing in the review section of the Google Play app store, one user noted that the app "Automatically installed without consent. It has no icon, no way to open this and see what it even does, which is a huge red flag… I think it's spyware, phishing as the DPH (Department of Public Health)."

Another wrote "Force-installed with no authorization or approval. App is hidden on the device to prevent uninstallation. Government overreach and corporate complicity should never be tolerated."