NSUserDefault with insert,update,delete facility.

In AppDelegate.h file just declare variable...

NSUserDefaults  *userDefaults;
NSMutableArray *yourArray;

after...

In AppDelegate.m Fille in applicationDidFinishLonching: Method

    userDefaults = [NSUserDefaults standardUserDefaults];
    NSData *dataRepresentingtblArrayForSearch = [userDefaults objectForKey:@"yourArray"];    if (dataRepresentingtblArrayForSearch != nil) {
        NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingtblArrayForSearch];
        if (oldSavedArray != nil)
            yourArray = [[NSMutableArray alloc] initWithArray:oldSavedArray];        else
            yourArray = [[NSMutableArray alloc] init];    } else {
        yourArray = [[NSMutableArray alloc] init];    }
    [yourArray retain];

after that when you want to insert,update or delete Data from this UserDefaults Use Bellow Code...

for Delete record from array

[appDelegate. yourArray removeObjectAtIndex:Index];/// give the integer value instead of Index

and this is for add record in array..

[appDelegate. yourArray addObject:AnyValue];///add value or here

after in final save this modification in array just archive like bellow..

NSData *data=[NSKeyedArchiver archivedDataWithRootObject:appDelegate. yourArray];[appDelegate.userDefaults setObject:data forKey:@"yourArray"];[appDelegate.userDefaults synchronize];

i hope this is helpful to you..