Rotten Apple

The Rotten Apple is the only Apple that removes points. It was added during the update that gave different apples with different values.

Appearance
The Rotten Apple has a red, rusted look to it.

Points Value
The Apple removes one point from your total, making it, as stated earlier, the only Apple to do so.

Trivia
Prior to the 5/18/2019 update, the Rotten Apple's flavor text upon collecting it was "Rotten Apple +-1".