Amateur singers can't get real-time pitch feedback without paying for apps with limited song libraries

Aspiring singers struggle to improve their vocal pitch and timing because popular singing apps either have paywalls, flooded song libraries with non-original covers, or require pre-downloaded song files that don't match modern streaming habits. Users want to practice with original songs from Spotify/Apple Music/YouTube with instant visual feedback on whether they're singing in key, but existing solutions force them to choose between outdated technology, subscription costs, or poor song selection.