What you need to know about Ryanair mobile apps
The iOS apps from Ryanair will work with all of your Apple devices, from iPad to iPhone
As a member of Ryanair Ryanair Airlines Frequent Flyer Program (and we always recommend joining loyalty programs, you can use the app to manage your account, view upcoming reservations, and more.
As the most popular mobile platform in the world, Ryanair has taken notice of Android and provided an app for most Android devices. You can get the same stuff done on the Android app as you can on the iOS app for Ryanair.
Also take a look at Ryanair's website by clicking here — you should be able to do what you need there.