[sillyfluke]

It didn't take mobile apps with the launch of the iPhone 20 years to add to the economy though, did it?

[m4rtink]

The iPhone was not the first mobile device or even the first smartphone. Not to mention it did not support mobile applications as we know them today.

[sillyfluke]

That seems a tad reductionist. Why not just say the iPhone was completely inconsequential because afterall it's simply another "computer". Why not go even back further and start the timer at the first physical implementation of a Turing machine?

The iPhone killer UX + App store release can be directly traced to the growth in tech in the subsequent years its release.