S5 UPSM Manager or Ultra Power Saving Mode Manager for the Samsung Galaxy S5 is an app that allows to easily add more apps that support ultra power saving mode (UPSM). UPSM is a feature of the Galaxy S5 but it only supports a limited number of apps. This app serves to add more supported apps with ease.
This app only works on the Galaxy S5 and requires root access which means your device must be rooted. Please note that this app only adds selected apps to the list which is read by the S5 UPSM framework and has nothing to do with how the ultra power saving mode feature works. It may be possible that some apps does not work in UPSM or may have some issues working in UPSM so please know that this app has nothing to do with that.