Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
GeeksPhone - Electronics and iOS
Stay Focused - More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.
BlackPhone - Silent Circle is a secure communications firm offering enterprise communications solutions including software, devices, and services.
Freedom.to - Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.
UnPlug - Track your iPhone usage & digital detox with Gamification