How can I look at the size of a file the application creates in bytes?
Use NSFileManager class' method
- (NSDictionary *)attributesOfItemAtPath:(NSString *)path error:(NSError **)error
The size key in the returned dictionary is defined as
NSString * const NSFileSize;
So for an example
NSError *error = nil;
NSDictionary *attributes = [[NSFileManager defaultManager]
attributesOfItemAtPath:@"/path/to/file" error:&error];
if (!error) {
NSNumber *size = [attributes objectForKey:NSFileSize];
}