Your will get TWO downloads when you purchase the digital planner iPhone  / Computer download BONUS iPhone download. Both downloads will come in a PDF document and can be opened on any device (computer, iPad, or iPhone) that is compatible with opening PDFs. I recommend using BONUS iPhone download if you're going to use your planner exclusively from your phone.    IMPORTANT In order to edit and write in your digital planner, you will need an application that allows you to annotate PDFs as well as a device that supports the use of a stylus. I highly recommend downloading the App, GoodNotes, first, that way you can immediately upload your purchased digital planner onto that platform and start using right away! (You will need to download GoodNotes on each device that you plan on using the digital planner in).