Type in the was price, the sale price, any "spend X get Y off" deals (every X, or once), stacked coupons and the pack size. You see what you actually pay, the real discount off the was price, the price per 100 g or per item after every deal, and, for each threshold within reach, what adding more really costs you. Works for Black Friday, 11.11 or any sale. Prices and currency are shown the way your language writes them, in 14 currencies. The items on screen are examples; swap in your own. Everything is worked out on your phone and nothing is sent anywhere. The cover photo-illustration is AI-generated.