An official app is on it's way but in the meantime Shedul's already been designed for optimal mobile use. You and your team can access your account through an internet browser and it works just like an app. This way you and your team can see your calendars on the move.
You can then save your Shedul calendar to your home screen. Just open the browser menu and select the "add to home screen" option. Shedul will then appear alongside your other apps.