For any task, you can give it a label at the top of the screen (main idea), then double tap each task element to edit its description and time interval, as well as color. The app is VERY gesture-based, but provides a tutorial when you first open it- my recommendation is to screen shot this or write the information down so you can remember what the different gestures do. Also be aware of the settings (tap the cogs)- you can turn off notifications and sounds, especially for those who get nervous with timers, and this area also allows you to email the complete list of tasks onscreen, which is great for collaboration with other educators or parents working with the student. You can also upload task lists to iCloud for use with different students or groups. This is a nice app to use in conjunction with an interactive whiteboard to keep ALL students on task.
Have you tried 30/30? Let us know in the comments what you think of it!