The latest info on Scoot mobile apps
Like many other airlines, Scoot offers an iOS app for all of your Apple devices.
For Scoot KrisFlyer members, you'll be able to manage your account from the app, though using their website will no doubt provide more functionality
Scoot has an Android app that works with most Android tablets, phones, and some Android Wear devices. Perhaps standard practice these days, the Android app offers the same functionality as the iOS app from Scoot.
Also take a look at Scoot's website by clicking here — you should be able to do what you need there.