A new and distinct cultivar of Argyranthemum plant named Supalife, characterized by its compact, mounded, upright and outwardly spreading plant habit; freely branching habit, dense and bushy plants; freely flowering habit with numerous inflorescences per plant; double-type inflorescence form with white-colored ray florets. The DLC information system includes four related databases. The amount of change required to modify the signal feature to the determined target quantization value is calculated and the cover signal is modified accordingly to so change the feature value over a predefined interval.