Apple’s App Store passed 70 billion cumulative downloads during the most recent quarter as its “incredibly strong” momentum continued, according to the company’s next CFO.

Apple added 15 billion downloads since the start of the year, when it revealed it had passed 55 billion downloads.

Luca Maestri, who will replace current CFO Peter Oppenheimer in the autumn, added that the highest-ever quarterly billing for the iTunes stores was “driven by very strong growth in App Store sales”. The iTunes stores generated $5.2 billion in billings for the period, up 24 per cent year-on-year.

Apple was also keen to emphasise its enterprise credentials. CEO Tim Cook said an increasing number of enterprise customers “are writing apps that are key proprietary apps for running that business”.

Maestri cited a number of companies that are using apps they have developed for iPhone or iPad, including Deutsche Bank which has created 40 internal apps “that expand the capabilities of its mobile workforce” running on 20,000 iPhones.

In addition, Siemens has deployed 50 internal apps for “field service teams, sales associates and corporate executives” across 30,000 iPhones. US pharmaceutical company Eli Lilly, meanwhile, deployed 50 internal apps on 20,000 iPads as part of its laptop replacement programme.

Cook noted that Apple must focus on penetration for the enterprise market, but “in terms of having people begin the process, beginning writing apps, we’re doing a pretty good job of that”.