Weave is a free to do app for iPhone. The things you have to do can be viewed as a list, so you can see what you have to focus on. This app can also used to manage projects, each comprising a number of to do items, and the overview list will keep you informed of incomplete tasks that need your attention.
When it comes to individual to dos and projects, you can store a wealth of information above and beyond a desired completion time. Depending on the type of project you are working on, particularly if you are charging for it, it may be helpful to track the amount of time your spend on them. Weave enables you to do, as well as tracking the amount of money your have spent and made in relation to it.
[advt]It is also possible to attach notes to entries and projects can be linked to others with they are associated in some way. The way different types of data can be woven together is slick and impressive, and the daily overview and alerts quickly proof indispensable.