has three main purposes in life. One is to add quick reminders. You can add a task with a note--such as, remember to get groceries after work--and set a priority to the task using a slider that changes the color. (Red means get it done .) You can then enter a due date and select a category, such as work or personal. (You can also add additional custom categories.) You then view those tasks by category, priority, due date, and title.

Second, you can use To-Do List to add an e-mail reminder--here, you enter the e-mail address and a note. Say you want to e-mail your boss about a great idea. You can enter the reminder and then send the e-mail once you have fleshed out the idea more.

Finally, To-Do List lets you add a call reminder. For e-mail and call tasks, you can initiate e-mails or calls your contact from the app.

Of course, an app like this would benefit greatly from multi-tasking, which the iPhone does not yet support. You can copy and paste from other iPhone apps, such as Mail and the Safari browser, but you can't run these apps all concurrently. However, being able to trigger e-mails and calls is a good way to keep you on task throughout the week.

To-Do List has a rather bland interface that lacks a professional, well-designed look and feel. Fields are all different shapes and sizes, presumably to make data entry faster--but they lack consistency.