Hide apps on iPhone
First, open Settings (the icon gray-shaped gear).
Then click General.
Slide your finger until you find Restrictions.
You will have to enter the unlock code.
Swipe again until you find applications.
To hide all applications that are not native to the iPhone, that is, those that come installed when you just bought the device, mark the Do not allow applications.
If you would like to see them again, mark Allow all applications.
The Do not allow applications not removed, only hidden and thus, if you have to leave for any reason your device and do not want anyone to know what kind of apps you have installed, this is the best option.
We also have to tell you that if you are organized and have all your applications into folders or some sort of order to re-enable viewing all lose the order in which you had, having to re-arrange them (do we say this from experience).
Did you find it useful to hide your applications which have anyone to know ?.