This is an excellent tool for work management, especially if you use it with your mobile phone or tablets device! It's very useful to track all tasks that I have in my list of projects (or whatever), as well as manage them effectively.
The best thing about this application was its simplicity; there are no complicated tools which make me lose time trying find what exactly i want from their website/app interface. And also - they provide great customer service when something goes wrong :) All-in-all good choice for tracking both physical activities AND digital ones such as emails, chats etc. You can easily organize everything related to your job by assigning each task to proper project where other people involved could see how much has been done so far, who needs more help etc., keeping everyone updated at once.