Here's a counter-example. For folks that do intermittent fasting, there's the need to track when you start and stop your fast. It sounds like a simple stopwatch app would solve this problem.

Yet an app like Zero (which is fantastically designed) is still incredibly useful, and has 54k+ reviews, and an average of 5 stars on the App Store: https://itunes.apple.com/us/app/zero-fasting-tracker/id11683...

Apps designed for specific purposes often trump general purpose apps that don't focus. We feel this is a similar space where a specific kind of solution is better than a general purpose one.