What does Spotify define as 'Commerical'

[as0355]

For the purposes of using the Web Playback SDK, what does Spotify define as "Commercial"?

My application is a virtual reality web app for browsing and playing Spotify playlists. It does not involve money or ads in any way. It is free and open-source. Does it still qualify as "Commercial" and thus require permission from Spotify?

[rowesteve]

No, that is not commercial.