Ad-Free4.0

Ad-Free mutes audio when an advertisement is detected during playback and can play different audio in its place. It is an audio ad blocker for Spotify and other supported services, designed for listeners who want to control interruptions without root access. Replacement sound can come from music files stored on the device or from arbitrary audio supplied to the application.

A plugin-based architecture keeps service-specific detection and handling separate from Ad-Free’s central audio controls. Spotify is supported, while the modular design accommodates additional service plugins. The app is written in Kotlin and presents a modern, simple interface; the project also functions as a research-oriented proof of concept for managing audio advertisements.

Version 4.0 improves Spotify and general advertisement detection by recognizing text regardless of capitalization, and it updates the Spotify detector for a change in the service’s internal notification layout. Ad-Free is open-source under the Apache License 2.0, supports Android 6.0 and later, and uses Universal architecture.