I have an iPhone and using ios5, feeling good with it but if you are interesting in exploring new features and updates on new ios 7 then I recommend you should update to.
Here I can show some new changes on IOS7
iCloud Keychain - Replace for 1Password
Keychain With iCloud , users can now manage passwords, generate random passwords , synchronization passwords to log on every Apple device ... in other words , will be fully equipped with the features of 1Password .
iOS Weather - Replace for Yahoo Weather
Designed with a flat style , simple but equally delicate and beautiful , with a variety of animation ... will surely make users feel satisfied and no longer need to use an application 3rd party .
Control Center - Replace for the flashlight app
with Control Center functions to allow quick change settings on iOS , including function on / off the flash , the user will probably not need to use a different application to perform the function this .
iTunes Radio - Replace for Pandora
iTunes Radio provides virtually complete functions like Pandora , the music player allows the user requests that love . If you already have an app on iOS 7 so , if the user needs to use an application with identical function as Pandora ?
Multitasking on iOS 7 - Replace for Auxo
New multitasking feature in iOS 7 will display the application in the form of cards and allows users to easily switch between them . The new feature is multitasking better CPU management to help prolong battery use .
Functional imaging - Alternatives to Instagram
Now users do not need to take pictures and then use an app like Instagram to add effects on photos anymore , because iOS 7 has improved image function on the device and includes automatic add filters to create effects on the captured image .
AirDrop - Replace for Instashare and Bump
Previously, with the help of 2 and Instashare Bump app , users can easily share data between devices running iOS and OS X , including large-capacity data .
However, now sharing files between iOS devices will become easier than ever with AirDrop feature was first fitted for iOS . With similar functions and Instashare Bump, users would not need to resort to the help of a 3rd party application from the same functions available on your device.
Hope it's clear to you and you will decide to update or not. Cheers,!!