You can add a note by entering the details screen of an activity and by clicking on the green FAB. Two options appear, add note or track activity.
When the grey add note button is clicked, you will be sent to to a dedicated note screen. A note can be typed and saved.
Once the note is saved, you will return to the activity details screen. You can still edit the note by clicking on the green FAB, followed by the smaller blue notes fab.A blue button indicate that a note has previously been added. Alternatively, a user can add a note from the tracking screen.