Retrieve running apps:
• Allows the app to retrieve information about currently and recently running tasks. This may allow the app to discover information about which applications are used on the device..
Run at startup:
• Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the device and allow the app to slow down the overall device by always running..

Read the contents of your usb storage:
• Allows the app to read the contents of your USB storage..
Modify or delete the contents of your usb storage:
• Allows the app to write to the USB storage..

Take pictures and videos:
• Allows the app to take pictures and videos with the camera. This permission allows the app to use the camera at any time without your confirmation..

View wi-fi connections:
• Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices..
View network connections:
• Allows the app to view information about network connections such as which networks exist and are connected..
Connect and disconnect from wi-fi:
• Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks..
Full network access:
• Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet..
Receive data from internet:
• Allows apps to accept cloud to device messages sent by the app's service. Using this service will incur data usage. Malicious apps could cause excess data usage..

Draw over other apps:
• Allows the app to draw on top of other applications or parts of the user interface. They may interfere with your use of the interface in any application, or change what you think you are seeing in other applications..

Control vibration:
• Allows the app to control the vibrator..
Prevent device from sleeping:
• Allows the app to prevent the device from going to sleep..

Update component usage statistics:
• Allows the app to modify collected component usage statistics. Not for use by normal apps..

- Add math scan function. Let try it?.