Will Hop remind me when my balance is getting low? April 12, 2019 20:26 Updated If your Hop balance is low, you’ll see a yellow warning in the top left corner of the reader screen after tapping. Related articles How do I check my card balance or the time remaining on my ticket or pass? How do I get my money back after my card was lost or stolen? Can I set up Hop to automatically add money to my card when my balance is low? I already have a plastic Hop card. Can I add that card to my iPhone or Apple Watch? Can I transfer my balance between cards?