"Remind me when @" is a Location based (wifi) reminder notification application.
For privacy concerns it only allows to register location if the user is authorized to connect to the wifi network.
Thus you can set a reminder message such as placing safe reaching call or completing tasks/ making payments on reaching any location such as office/ home.
The application neither uses GPS nor cell/wifi based coarse location triangulation - it relies on only the connected wifi network SSID.