Now that you’ve done your partying and charged your phone up, check out your messages. did you send anything you maybe shouldn’t have? Do you regret any of those “Happy New Year!” messages? Well, they’re all out there now, aren’t they. If only there was an app that would let you pull back your messages or photos. Wait, there is — Strings. The new messaging platform lets you yank sent messages back, even if the recipient has received them and laughed at you already.