Apple Inc. (NASDAQ:AAPL)’s iPhone 6 and 6 Plus have done extremely well in terms of sales. And now data from Boston-based app marketing firm Fiksu show that the iPhone 6 and 6 Plus have triggered massive app downloads. Total downloads for the top 200 free iOS apps surged 42% from 5.5 million in September to a record-breaking 7.8 million in October.

iPhone 6 Leads To Highest Ever App Downloads: Study

iPhone 6, iPad Air 2 and iPad Mini 3 helped app downloads

The App Store Competitive Index suggests that app downloads increased 39% from October last year. Besides the iPhone 6 debut, October’s growth was also helped by the iPad Air 2 and iPad Mini 3, which hit the stores the same month. Fiksu monitors more than 3.5 billion app installs and 5.4 trillion marketing events on more than 1.7 billion devices worldwide.

iPhone 6 7.8 Million Download

It is a good sign for app and game developers. The cost of acquiring users also declined in October compared to the previous month. With the beginning of the holiday shopping season, marketers expect a lot more downloads. The cost per loyal user index declined from $2.25  in September to $2.16 in October. The cost per loyal user is the cost of acquiring  users who open an app at least three times.

iPhone 6 Loyal User

Users download favorite apps quickly after buying the iPhone 6

Fiksu CEO Micah Adler said that the decline in the cost of acquiring users was because of users’ tendency to quickly download their favorite apps after upgrading their devices. Apps downloaded immediately after buying the iPhone 6 and 6 Plus are most like the ones a user can’t live without. Meanwhile, the cost per launch index rose 24% to 26 cents from September to October. It tracks the cost of driving engagement from mobile devices.

Cost per launch

The iOS cost per install jumped 59% YoY in October to $1.46. It shows the growth in competition as ad dollars keep flowing into mobile. There were more than 1.3 million apps available in the App Store in 155 countries at the end of September. Apple has revealed that its App Store gets more than 300 million visitors per week.

iPhone 6 CPI