I have long been a HUGE fan of ReadTheScriptures.  For those not familiar with their service, they let you log in and create free reading schedules that email you your reading assignment each day.  You can set up schedules for everything under the sun.  I used it last year to read all the standard works in a year.  Right now I am using it for our companionship study with my sweet wife.

Well, just recently they released an iPhone version of their software that lets you set up schedules on your Phone, read your scriptures, mark your scriptures, add notes, and more.

It is really an awesome program.   (Price: $10.99)