Wolow is a free app for remote desktop management that lets you start a computer by sending a "magic packet" request.

This app works by sending a request to your configured IP address, and the first device that receives this request will start up.

It supports all computers that work with the "Wake on LAN" protocol.

To start up a device you need to add a device configuration within the app, select the device you would like to start up, and then press the power button.

The app will then ask you to enter the device's IP address, and the device's configuration.