What app can you not believe someone hasn’t made yet?

One that combines shopping for groceries online with monitoring your diet, making sure it's balanced, and also alerting you when food is expiring, and what needs reordering. Plus recipe suggestions based on the food you have in and recommendation of things to buy in order to make new things.

Oh, the 'Laserzap' app. It operates quite simply when you point your modern, hand-held telephone at a particular person or object. You sight them in the crosshairs of that little lens and a beam of amplified light radiation simply vapourises the person or the object rather than the traditional method of taking a photograph. This device would save many gigabytes of storage on those little data card things that people slot in.

One that automatically makes selfie addicts look fake like they want.

The ap for finding the right ap.