Duorem

Duorem is an Android app for sending wake-up or shutdown actions to a remote computer from a phone or tablet. It is built around remote power control, letting the mobile device act as the command point while the computer remains elsewhere on the network.

Its function is narrow and practical: start a computer that supports wake-on-LAN style waking, or send a shutdown request when remote control is needed. The listed platform is Android, so the app is meant for use from an Android device rather than from desktop systems.