Wapdroid

Wapdroid manages WiFi to save battery power, turning it on when near known networks, and off otherwise.

Features:

-cell towers used for location instead of GPS to save power

-view and manage stored WiFi networks

-turn WiFi off when the battery is low

-turn WiFi off when the screen turns off

This is the ad-supported version. For the ad-free version, try Wapdroid-Pro.

Explanation of permissions:

CHANGE WI-FI STATE

-required to allow enabling and disabling WiFi

CHANGE NETWORK CONNECTIVITY

-required for scanning for networks

READ PHONE STATE AND IDENTITY

-required for getting cell tower information

PREVENT DEVICE FROM SLEEPING

-required for monitoring briefly with the screen off

COARSE (NETWORK-BASED) LOCATION

-required for location information

FULL INTERNET ACCESS

-required to get cell tower information