In the 2010s, the peak years of application development, often referred to as the app economy or gig economy, thousands of apps were born with the hope of solving online users' pain points. The most challenging task for app builders at that time was how to persuade users to download their app, then use it, and ultimately keep the users from deleting the app. The competition among apps was fierce, vying for a spot on users' smartphones. It wasn't until users realized they didn&a...