營計寶 NuCal (Tablet version). Nutrition Calculator (NuCal 營計寶) is a mobile application tool developed by the Centre for Food Safety (FEHD, HKSARG) for making better food choices by using nutrition labels. This version is suitable for Android tablet (screen resolution 480x800, 720x1024, 768x1024, 800x1280) with Android 4. 0. 4 or above. It serves 8 main functions and features.