@zeppo, It looks like the Pocket Dietician is no longer available. I did find the Healthy Food app but it's only on the Google Play Store for android phones/tablets - https://play.google.com/store/apps/details?id=com.oajoo.healthyfood&hl=en_US&gl=US

Another member has mentioned using the Chronometer app - https://cronometer.com/. MyFitnessPal app is another good one. Here's a comparison of the two - https://vegfaqs.com/cronometer-vs-myfitnesspal/