If you could invent an app, what would it do?

A social app only for married woman. 

It would match tasks to the user's energy levels throughout the day, helping people work more efficiently and stay productive

An app that helps travelers find authentic local dishes. Simply enter your location to get recommendations for traditional foods and restaurants.

I would develop a SuperApp that integrates the functions of different apps as a one-stop-shop

I would develop an app with open interfaces that allows users to report issues such as broken street lamps, discarded bulky waste, potholes, any defects in trains, damages to playgrounds, malfunctioning traffic lights, and other damages with location data, and be rewarded through gamification.