You let your phone manage your contacts, appointments, and even your health, so why not let it manage your relationships, too? Pplkpr uses GPS and a heart rate wristband to determine your emotional state around specific friends. As a result, it can tell you who makes you the most anxious, the most excited, the least bored, and so on, giving you a better idea of which friends you should maximize your time with and which friends you might want to make less frequent appearances in your life.
Our iPhones are smart. Just not when it comes to helping us find them. Now you can locate your iPhone using nothing but the sound of your voice thanks to Marco Polo. This app listens for you to shout "Marco" — or any other input phrase you like — and responds with either "Polo" or another message of your choosing, in one of 30 unique character voices. It works in silent mode, will pop up a notification to let you find your phone in the dark, and can even boost the volume if you've got it set too low to hear. At last, no more tearing apart the couch/bed/house just to check Twitter.
Depending on your age, you might not even remember a time when taking photos meant hitting the shutter button, getting to the end of the roll, and then waiting for your film to be developed before finding out what you have. WhiteAlbum is trying to bring that same feeling of
overwhelming anxiety anticipation to modern times. The app lets you shoot 24 photos per album, and once they're taken, they're uploaded and turned into 4" x 5" prints that are then shipped back to you. The cost is $20 an album, which is probably about what you'd pay for a decent disposable camera and development service, but without the need to actually go anywhere.
Keeping your inbox at zero is hard enough without being bombarded by mailing lists and newsletters (there's only one you really need). Trim away these distractions with ease using Unsubscriber. This clever app works with all your GMail accounts, letting you login and go through your subscriptions in a plain list. Just swipe left to unsubscribe, swipe right to keep a subscription, and before you know it, your inbox will be a whole lot cleaner — and easier to manage, too.