Google Text-to-Speech (TTS) for Android is a built-in system component that converts written text into spoken audio. It[SQ]s the engine behind many Android features that read text aloud, such as :

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Screen readers:

For visually impaired users, it allows them to access the content of apps and websites.
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Voice assistants:

Google Assistant and other voice assistants use it to respond verbally.
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Navigation apps:

GPS navigation apps use it to give spoken directions.
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E-book readers:

Many e-book apps use it for audiobooks functionality.

Essentially, it[SQ]s the underlying technology that makes spoken word from text possible on your Android device. You don[SQ]t usually interact with it directly as a separate app; rather, it[SQ]s a service used by other apps. You can, however, change the voice and language settings for Google TTS within your Android system settings.