Samsung's two 2013 flagships, the Galaxy S4 and Galaxy Note 3, are gaining more battery mileage thanks to a free application from Qualcomm called BatteryGuru.

According to Gotta Be Mobile, the two high-end devices stand to add some six hours of power juice with the application installed and actively working on the system. For GS4 users, the gain could go as high as 50 per cent.

Of course, for BatteryGuru to display its prowess the GS4 and Note 3 to host it must be powered by a Snapdragon processing chip.

Samsung selectively released variants of the handsets running on 8-core Exynos CPU but for most markets the powerhouse of choice is Snapdragon 800.

Using the power management tool is straightforward. GS4 and Note 3 owners can simply download the app then its touch and go. By default, BatteryGuru is set for optimal battery behaviour and here are the three ways users can squeeze more power juice from their devices.

Automatically kills and activates background apps and device functions

Based on users' reconfiguration, messaging apps or social media apps will be turned off by BatteryGuru when not in use. Such action not only lightens the pressure on the battery but also frees up RAM, partly boosting the devices' overall performance

Also, Bluetooth and Wi-Fi connections will be switched off as soon as the application detects that the distance between the gadget and a router (or a paired device for Bluetooth) is way out of range.

Learns device usage pattern

As mentioned, BatteryGuru is largely install, set then forget. The application gradually learns how a user is interacting with a device then adopts accordingly. This way, the general app setting is automatically adjusted to deliver the best balance between normal use and extended battery hours.

Notifies users the best time to charge up

BatteryGuru pulls up an alert notice that advises device owners when to best charge, which normally falls on idle periods such as right after waking up in the morning. In doing so, users can take their breakfast, prepare to go to work and get the assurance that enough power juice is stored on their phones to last them the day.

At present, the supported Android devices are mostly of the upscale class so aside from the Galaxy S4 and Note 3, owners of the following smartphones can also take advantage of the useful BatteryGuru features: LG G2, HTC One and HTC One Max.

The app is also accessible for Windows 8-powered phones, specifically the Nokia Lumia 1020 and Nokia Lumia 1520. But strangely enough, BatteryGuru is not working at the moment with the Nexus 4 or Nexus 7 even if these devices are powered by Snapdragon chips, GBM said.