Pomotodo - Pomodoro meets GTD

Based on Pomodoro Technique and GTD (Getting Things Done), Pomotodo helps you work more efficiently.

Pomotodo stands out for several reasons: it combines a to-do list and task management system with the Pomodoro technique and GTD method. It’s easy and intuitive to use: create a to-do list, start the 25-minute timer, and cross tasks off your list as completed. The list is synced between your phone and computer.

Pomotodo Google Chrome Extension

Pomotodo is also a task and workflow management system allowing you to track your tasks and the time each took to complete. See your history at a glance with helpful graphs of your most productive time, day, and total and average pomodoros completed.

Source:
http://www.legalproductivity.com/mobile-lawyers/app-week-pomotodo-lawyers-task-management/

Apps available for iOS, Android, Mac, Windows, and Chrome Extension

Pomotodo Pro paid version is available with more feature. It can be unlocked from the app with a subscription. The unique thing is: YOU can determine the subscription rate of your choice, starting from USD 2 per month, up to USD 12 per month.

You get a free trial of the Pro version for 15 days from the email sent to your inbox. However, you get 30 days of free trial from the iOS app. That is twice the trial period you can get from the email.