Auto Airplane Mode (Free) description
1. This app can help your phone automatically turn on/off airplane mode at specified time.
2. You can set multiple time spans, the multiple of 30 minutes.
3. You can also remain your WiFi status in airplane mode
Attention: Not supported in Android 4.2 or higher now, will be fixed in the next version
If you find some bug or have some good ideas please write to me. Your suggestion is well appreciated!