A free app for Android, by Planning Center.

Planning Center Music Stand is an add-on service app for android devices that makes it easy for you to read your Planning Center Services account.

Once you log in, you can see any PDF that is in your account. You can also choose to display the PDF for each item.

If you use a Bluetooth foot pedal to turn the pages, you can use Planning Center Music Stand to turn pages with a wireless foot pedal.

The app has several tools for you to use to take notes: highlighter, pen, and text. You can also use these tools to annotate any PDF. 

You can also listen to audio files attached to any song in the selected plan.