App economy to grow to $6.3 trillion in 2021, user base to nearly double to 6.3 billion

 The global app economy will be worth $6.3 trillion by 2021, up from $1.3 billion last year, according to a new report this morning from app analytics firm App Annie. During that same time frame, the user base will almost double from 3.4 billion people using apps to 6.3 billion, while the time spent in […]