On Monday, Fiksu published new data revealing that which comes as very little surprise to anyone.

As widely anticipated, Apple’s iPhone 6 and iOS 8 introductions last month brought with them both new opportunities and costs for app marketers. In fact, September was a very pricey month for those attempting to market to and obtain loyal app users.

"Reaching an all-time high in September, the Cost Per Loyal User Index increased 21 percent to $2.25, representing a 34 percent rise year-over-year," Fiksu reports. "This new high-water mark reflects the enduring trend of increasing activity and competition to capture loyal, engaged app users."

Interestingly, Fiksu notes in today's announcement, the rapid global adoption of Apple's iPhone 6 devices led to a frenzy of activity, as the refreshed iPhone "has driven over 116 percent higher adoption than Apple’s last iPhone."

To check out the full rundown from Fiksu, click here.

Source: Fiksu