Idderall is described as 'An add-on for Mozilla Firefox that can help prevent you from procrastinating by setting up a schedule to block websites. Idderall lets you set up a deterrent to keep you from unblocking websites or changing settings' and is a anti procrastination tool in the office & productivity category. There are more than 25 alternatives to Idderall for a variety of platforms, including Mac, Android, Windows, Android Tablet and iPhone apps. The best Idderall alternative is LeechBlock, which is both free and Open Source. Other great apps like Idderall are Cold Turkey, One Sec, Forest and FocusMe.