Saving app data after iphone/ipad reset

The photo in the link below illustrates the app I am currently working on, the name is a UITextfield that the user edits him/herself and the balance is label in which the user clicks the add button to add their desired funds. Then the two textfields below that allow for the input of money spent and how it was spent, this is then saved as a UITableviewCell in the UITable view. The problem I am currently having right now is when I restart my iPhone device the previously inputted data is rested meaning the user will have to rewrite everything which wouldn't help as this is an app to monitor one's savings. I did some googling to see if there was a fix for this I came across NSUserDefaults and tried the following code in my viewDidLoad.

Could someone provide the steps for a different approach to keep the inputted information where it is even after the user turns off his or her iPhone/iPad etc. Heres the photo link

http://ift.tt/1xciq2n

     [[NSUserDefaults standardUserDefaults] synchronize];