Why is my number different from the package or another app?

First compare the same product and amount. Check the brand, country and raw or cooked state, then whether the value is per 100 g, per serving or for your entered amount. Check serving weight and whether energy is shown in kcal or kJ.

Labels and recipes change, and another app may use a different source. Open Calsa's source to compare. If the package still disagrees, correct your own food from the label and report the product. Your private correction can help now. Changing the shared database requires a separate check.