The best way to remember people's names doesn't require an app or any technology to speak of. When you meet someone, key in on their most unique, memorable physical feature or personality quirk. Come up with a quick story or catch phrase that revolves around that feature. The weirder the feature and the story, the more likely you are to remember their name.

For instance, you meet John. John's eyes seem like their closer together than most people's eyes are. So you could say to yourself "John, John, stared at his nose for too long". Every time you see John and his funny close-together eyes, you'll remember the story you made up and thus remember his name.

Once you get good at this you'll never forget another person's name. It works like a charm. I find it helps to make the stories especially strange or even offensive. The more of a caricature you can create in your mind about them the better. Just don't accidentally say what you're thinking out loud :)