He's starting with New York, but said Sydney would be one of the first cities he rolls it out in once he's proven the model.
He said he would launch Urban Compass to a select group of testers in April or May but the wider public would be able to try it by the US summer.
He compares the promise of the technology with the experience of using Google for the first time, when people realised there was a whole sea of information out there to tap into beyond the meagre selection of web pages available on early web portals.
"There's a lot of companies and apps out there that don't do much, they're just time-wasters... another social network, another filter for pictures, a way to take videos - cool, but does it really help you?," he said.
"I want to do something that actually brings more technology into the real world. The vision is pretty big."
Helping him open doors and realise that vision are a coterie of high-profile investors including Founders Fund, Goldman Sachs, Thrive Capital and the chief executive of American Express, Kenneth Chenault.
Allon, who has triple citizenships in the US, Australia and Israel, describes his technology as an "operating system" or platform that at launch will have one main application but will be rapidly expanded.
"It's not an incremental change, it's not like we have better reviews of restaurants, no, it's way bigger than this," he said.
Allon is now living the dream, investing his money in several start-ups and, for fun, he's also in the market to buy a bar.
Only a small percentage of entrepreneurs create successful start-ups even the first time, but Allon has almost knocked it out of the park three times in a row.
He credits his success in part to his high technical knowledge, having gained a bachelor's degree, master's degree and a PhD in computer science in Australia, with enough coding knowledge to code his entire Orion search engine himself.
He recalled how Google had sent two of its top engineers to see the search product, which he ran out of a small room at UNSW, and after 30 minutes playing with it one turned and asked, "how did you do it?". The next day he was invited to fly first class to Google's headquarters in Mountain View to show it off to the top brass.
He's yet to show his latest creation to Google ("It's way too early for that") and this time he plans to build a world-changing company as opposed to being acquired.
"But anything can happen," he said.
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