I like that it has some features not found in any other app, such as time tracking for each task (or project), which is very helpful when you need to keep track of how much time each employee spends working on a particular task. The UI could be better - it's outdated compared with similar apps available out there. It doesn't have many bells or whistles, but it does what it should do well enough. Take your pick between those two.
This is one of the only ones that lets me log my hours on the go…