Airplane Mode on the iPhone can be useful for situations besides just flying. Many people use Airplane Mode to shut off the radio signals broadcasting from their iOS devices while sleeping or when they don't want to be disturbed. Not only this, but Airplane Mode improves battery life.
The best part about Airplane Mode is you can still enable lower-power communication from your device such as Bluetooth and Wi-Fi, while ensuring that cellular radiation isn't being emitted. So where does the tweak AirplaneScheduler come into play? Quite simply, this tweak makes it possible to schedule the times during which your iPhone enters Airplane Mode automatically.