Vogtp

Price: Free

CPU Tuner is similar to , but only works on rooted Android devices. It can regulate CPU speed, data connections and syncing to help save battery life and increase performance. You can configure it to control these settings automatically by creating triggers based upon the battery level and the state of the device: screen locked, call in progress, using battery, using AC power or battery too hot. In addition to triggers, it can also automatically adjust the CPU speed based upon the profile you choose: Performance, Power Save, On Demand and Conservative.

For example, you could set CPU Tuner to under-clock the CPU to save power when the battery is low or over-clock to increase performance when battery life isn't an issue. You can also disable or limit data connections and/or background syncing when your battery is running low. Then if you need to go online, you can still manually enable the data connection and sync.