Save battery when you has no wireless connection!
Do not forget to turn on the wifi when you arrived home. Or arrived to the office. Or you arrived to restaurant where is wifi.
The Auto Wifi Toggle is a great solution for turning on/off the Wifi. It will check in every time (depends on your setting, for example every 15 minutes) that you have wireless connection or not. If there is no connection it will turn off the Wifi.
Then the program will check again every time that you arrived a place with wireless network, then it turn on the Wifi.