EchoEcho is a new cross-platform "where are you?" application and service, using SMS as its communications medium, to ensure compatibility with most phones. Reviewing it seemed like a job for Ewan Spence and he dived into with glee. Although he reckons it's "an answer in search of a question", both of us reckon it has potential. Comments welcome, no matter if you think it's a slice of genius or a complete dud!

"From a function point of view, EchoEcho does pretty well, and it mostly delivers on the promise. I'm just a bit wary about the implications of being able to automatically find out where someone's phone is by clicking an option on my phone."

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