There are alarms that make you go in circles, to get near the router, and there is Wakie, an app that encourages complete strangers around the world to wake you up with a phone call.
Wakie is around for quite some time, considering that for a longer period a Russian version called Budist was available.
However, thanks to additional funding, Wakie is now available for other markets.
App is currently available in US, Canada, United Kingdom and Hong Kong – if you want to be awaken. However, if you are only satisfied by waking up people you can sing up from any country.
In case that Wakie service is unavailable at the moment of waking up, that doesn’t mean you will sleep late and miss a meeting, but automatic call will wake you up.
Wakie is available for Android and Windows Phone, while iPhone version is waiting on approval form Apple.