I'm responsible for an internal tool at the company I work for, hosted as a website, that handles a bunch of miscellaneous tasks that other employees need. Think reimbursements, documentation and reporting, gathering and presenting business data. That sort of thing.
When I took it over, it was desktop only ( a lot of <table> formatted pages with fixed px sizes). I spruced it up, modernized it to work on screens of any size, and created a mobile version of any pages that just didn't translate well to small screens (think "large tables of information").
When I announced the update, the number of people who asked me variations of "how to get website on phone if website on computer" or requested I make the damn thing an app was outrageous.
We take tech literacy for granted, because it's like a dozen levels down fundamental to our entire field. But the tech illiterati exist, and they love apps.