Apollo for Watch app for iPhone and iPad
Apollo is a standalone Spotify player for Apple Watch. It allows you to stream music directly on your Apple Watch over cellular network, and provides ability to play downloaded playlists offline.
========
Disclaimer
========
Spotify Premium is required to use this application.
Streaming over cellular network requires an active cellular data plan, and may not available at all places.
Apollo uses content provided by Spotify Web API but is not sponsored, endorsed, certified or otherwise approved in any way by Spotify. Spotify is a registered trademark of the Spotify Group.