I love the fact it covers different and very specific areas I need for my productivity - a daily task schedule with sub tasks - a calender to plan my roadmap, project lists for my work and to collaborate with my team, even assign tasks to them, and just recently, the new daily log in the habits is really helping me form new habits. I love the fact that most of the important features are free, it makes it easier to work with my team without them using premium like I do, and they learn it easily