Nielsen has published the results on a new survey on smartphones and mobile apps, and it’s no surprise that the top apps are still Facebook and YouTube. As for the number of apps people are installing on their devices:

In just a year, the average number of apps per smartphone has jumped 28 percent, from 32 apps to 41.

Interestingly, while the number of apps have increased, the time spent inside apps has only increased 10%, from an average of 37 minutes last year to 39 minutes today.