Re: Painful lessons
Nothing implies an app should be a data hoarding one. Just, too many app developer though the path to success was paved with ads and had slurping holes everywhere.
Dedicated apps are better than "responsive" (aka five-years-old designed ones, with big colorful images and buttons, one line sentences, and little else) as soon as the interaction with the app is complex enough - and when they have to work where data connections are expensive. For simple data perusal, a web site can be better - as long as it has useful data, not just something imagined by marketing and designers together - leaving users scratching their heads were to find the information they need.