The app economy is already booming. in 2016, analyst firm App Annie estimates that global gross consumer spend on mobile apps was $1.3 trillion. This figure though, is forecast to increase by 385 percent over the next five years to a colossal $6.35 trillion.

The country contributing to this figure the most, is and will be China. Come 2021, some $2.6 trillion of revenue is expected to come out of the country - an increase of 228 percent. Of the major markets, the United States is set to provide the biggest proportional increase - hitting $820 billion on the back of a 310 percent rise.