Upper UI (Tools)
This is the Tools panel. Inside are a number of tools that can help with your editing.
This is the Snap to Time tool.
If you tap this button, you'll automatically snap every note you draw to the nearest meter mark. Tap it again to disable this mode.
This is the Snap to Pitch tool.
If you tap this button, every note you draw will stick to the closest pitch gridline. Tap it again to disable this mode.
This is the Draw from Play Line mode.
If you tap this button, every note you draw will attach to the red play line in the middle of the screen. This allows you to make very fine adjustments with your note placement. Tap it again to disable this mode.
This is the Shift Notes tool.
Tapping this button will put you into Shift Notes Mode. This mode allows you to easily make adjustments to the position of your notes in time. To leave Shift Notes Mode, tap the tab in the upper-right corner.
To shift your notes, draw with your finger as if you were making a new note. The currently selected notes will shift based on the position of your finger. Notes can even be shifted when zoomed out.
The notes that will be shifted are selected based on the settings underneath the mode tab. The first setting, Layer Selection, determines whether just the current layer or all the layers are selected during a shift operation.
The second setting, Note Selection, determines whether only the notes touching the selection line are selected, or if every note to the right of the selection line is also selected. Keep in mind that you will not be able to shift notes past the bounds of the canvas, so if you happen to have a note on the far-right edge of your composition, you might not be able to shift notes earlier on if All to Right is selected.
The third setting, Snapping, determines whether notes are shifted only by the length of a meter mark, or if instead they can be shifted an arbitrary distance.