NSURL *url = [NSURL URLWithString:@"here your web app url"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
[request setHTTPMethod:@"GET"];
NSURLResponse *theResponse = NULL;
NSError *theError = NULL; 
NSData *theResponseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error :&theError]; NSString *jsonString = [[NSString alloc] initWithData:theResponseData encoding:NSUTF8StringEncoding]; NSLog(jsonString);