What you need to know about Jetstar mobile apps
Like many other airlines, Jetstar offers an iOS app for all of your Apple devices.
Also, if you're a member of Jetstar Jetstar's Plus, Max or Business Max, you can manage your profile, view your points balance, and more.
The Android apps from Jetstar work with all Android phones and tablets from various manufacturers (Samsung, LG, Google, etc.), and Android Wear watches might also be compatible. You can get the same stuff done on the Android app as you can on the iOS app for Jetstar.
Also take a look at Jetstar's website by clicking here — you should be able to do what you need there.