Flora - Stay Focused Together - Flora is a gamified pomodoro timer, habit tracker, and to-do-list app that encourages you and your friends to put down the phones and be productive via tree planting.
RescueTime app - "helps you increase your productivity by monitoring your computer use and informing you when and how you're both productive and distracted".
GTasks : a simple and efficient to-do app with Google synchronisation
Wanting to stop procrastinating and build your willpower? Try 'Temptation Bundling'.
These modules include information about procrastination and suggested strategies and worksheets for stopping procrastination.