I have only downloaded 2 apps on my iPhone, but the 'about' section in my phone settings says that I've downloaded 9

I didn't, but i think i figured it out. When i go to my account page in the app store and look at my purchased apps, it shows the 2 that i downloaded, 4 preinstalled apps that i updated, and 3 other random preinstalled apps, bringing the total to 9. No idea why it does this.