Up from 31bn in 2011.
The hunger for consumer apps will reach its highest point in 2016 when downloads will pass 66 billion, more than doubling the 31 billion downloads in 2011, according to Juniper research.
Meanwhile, 87 per cent of downloads will be free apps, though developers are set to profit post-download from in-app purchases and subscriptions.
Smartphones will continue to occupy the majority of the app market, though almost one in four downloads will be made via tablet.
Dr Windsor Holden, report author, said: "Consumers are now demanding 24/7 access to services – retail, financial, information, entertainment – wherever they are.
"As a result, brands that wish to remain competitive have turned to apps as part of a integrated multichannel distribution system: they have become a critical mechanism to increase engagement and reduce churn."
Further results show that developers need to be innovative in order to separate themselves from rivals by observing consumer usage patterns, and to partner with payment firms for real-time updates.
Additionally, gaming will be the most popular apps downloaded, followed by multimedia, while browser-based apps of the HTML5 kind are set to lead the way in future.
Juniper urges operators to launch third-party app stores in order to further drive app sales.