IMO, don't install apps that may compromise your device/privacy/security.
GearBest
Permissions:
Version 2.6.2 can access:
Identity
find accounts on the device
Contacts
find accounts on the device
Photos/Media/Files
read the contents of your USB storage
modify or delete the contents of your USB storage
Storage
read the contents of your USB storage
modify or delete the contents of your USB storage
Camera
take pictures and videos
Wi-Fi connection information
view Wi-Fi connections
Other
download files without notification
receive data from Internet
view network connections
send sticky broadcast
control flashlight
full network access
control vibration
prevent device from sleeping
Cheers
I