Duolingo

Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.

Allows the app to view information about network connections such as which networks exist and are connected.

FOREGROUND_SERVICE

Allows the app to control the vibrator.

Allows the app to get the list of accounts known by the device. This may include any accounts created by applications you have installed.

record audio

POST_NOTIFICATIONS

READ_MEDIA_IMAGES

Allows the app to read the contents of your USB storage.

Allows the app to write to the USB storage.

Allows the app to read data about your contacts stored on your device, including the frequency with which you've called, emailed, or communicated in other ways with specific individuals. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.

Allows the app to prevent the device from going to sleep.

Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the device and allow the app to slow down the overall device by always running.

READ_APP_BADGE