Is There a Metronome/Click Track in the Sunday Keys iPad App?

Yes!

With the release of Sunday Keys App v1.6.0, there is a built in Metronome included.  Visit the Settings article for more information on configuring the Metronome.

If you'd like to learn more about how to set Tempo in the Sunday Keys App to match an external metronome/click track, click here to read more about that.