I couldn’t find the EMV TLV decoder for iOS. However, I found a PHP code on github. So, I port to iOS version. However, I only need decoder. So, ios code include only decoder.

#import "SGTLVDecode.h"

//some of your code
//usage it

NSDictionary *value = [SGTLVDecode decodeWithString:@"Your TLV String"];

NSLog(@"TLV %@",value);