Unlike many online converters, the desktop app provides a clean, ad-free environment. Limitations

The free version limits the number of daily downloads (e.g., up to 15 per day), requiring a paid "Turbo" or Pro license for unlimited usage.

Beyond YouTube, it extracts audio from SoundCloud, Facebook, Vimeo, TikTok, and Instagram.

4K YouTube to MP3 3.9.1 is a specialized desktop application designed for fast, high-quality audio extraction from various video platforms, with a primary focus on YouTube. As of early 2026, this tool remains highly regarded for its simplicity, ad-free experience, and ability to handle playlists, making it a reliable choice for offline audio consumption.

Users can download entire YouTube playlists or channels in one click, often organizing them into subdirectories.

Supports saving audio in MP3, M4A, or OGG formats, with options to download in up to 320kbps for high fidelity.

Includes a built-in player, allowing users to listen to downloaded audio without switching apps.