iOS 7 Causes Dip in Mobile App Marketing Costs for September, Find Fiksu Indexes October 30, 2013 / 10:17 PM Study Shows Year-Over-Year App Download Volume Has Grown 40 Percent, Fiksu, Inc. (www.fiksu.com), developer of award-winning app marketing technologies, today published its latest Fiksu Indexes which reflect the impact of…