Google Play Store has more than 3.5 million apps and Apple has over 2.2 million. In other words, the market for mobile apps is huge, given that a majority of people consume information and buy various products via smartphones.
This is a companion discussion topic for the original entry at https://blog.crowdbotics.com/how-to-know-if-you-really-do-or-dont-need-a-mobile-app/