User review: "Tried using the app- no listeners were available. Cheaply made."

Users know. That's why most of these apps die within 1-2 years.

Have you used any airline app? Have you used any "cross platform" bank app?

I've actually switched banks because i preferred the one with the better mobile app. A bad app just shows how outdated they are.

Not saying there's no demand for building such apps, businesses clearly don't care (yet). When they start losing business they'll have to care.