Lisa Eadicicco
The home screen of the iPhone 6S.
These range from messaging to stocks to finding your friends. All are designed to work perfectly with Apple's handset.
But many have not changed much over time and, because they cater to everyone, aren't very good in some scenarios.
Luckily, Apple also has the App Store: a one million strong selection of apps made by third-party developers that can fill in any gaps and, in many cases, do a better job than Apple's default apps.
Of course, it's impossible to delete a default Apple app but you can always create a folder hidden deep in the fifth home screen.
Here are the best replacement apps.
Get THE MID-YEAR SMARTPHONE MARKET REPORT now! A comprehensive look at the global smartphone market from BI Intelligence by platform, vendor, country and more. Insights into the power struggles between the biggest platforms and the underdogs. Get the Report Here »