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Mobile signal mapper OpenSignal has launched a new app that maps Wi-Fi hotspots to help device users in need of a connectivity fix — expanding its network of crowdsourced intel into another,

albeit related area. (OpenSignal also launched a crowdsourced cell phone data weather-mapping app back in 2013.) The new app, called WifiMapper, launches today on iOS, with an Android app

due in about a month, according to co-founder and CEO Brendan Gill. The app is free, and initially draws on a database of Wi-Fi hotspots generated by OpenSignal’s existing network of

existing app users. “We’ve been crowdsourcing data on mobile network originally, and wi-fi networks, for about four years. And we’ve had getting towards 15 million downloads of that

application,” notes Gill, adding: “We think we’ve assembled one of the biggest databases of Wi-Fi networks out there.” There are already scores of Wi-Fi hotspot mapping apps vying for

attention on the App Store. But firstly its the aforementioned scale which Gill says makes OpenSignal’s WifiMapper stand out. “Compared to most Wi-Fi apps the scale of the data we’ve got is

really much larger,” he claims. The OpenSignal app active user-base now stands at 1.5 million globally, and it’s those users’ apps which are feeding data back to this new Wi-Fi hotspot

mapping app — it’s claiming its database contains some 500 million hotspots. The other big differentiator Gill points to is WifiMapper’s ability to distinguish between free Wi-Fi vs paid

hotspots. There’s also some related context the app is shading in — so you can tell whether a free Wi-Fi hotspot is in a cafe or a bar, for instance. OpenSignal is meshing its data with

Foursquare’s location review data to provide that added context, according to Gill. “We’ve built intelligent algorithms to try and actually classify this Wi-Fi. Although we say we’ve got 500

million hotspots in our database most of those aren’t actually useful for users. The trick is actually figuring out which ones of those are free,” he tells TechCrunch. “We’ve gone a lot

further, and provide a lot more data to users, so we’ve figured out what actual place database this Wi-Fi point is attached to so you can see the actual place, the location, the name, the

type of venue it is — is it a cafe, is it a bar — and also comments about the venue as well. We’ve cross-referenced it with the Foursquare place database.” OpenSignal’s Wi-Fi hotspot is also

measuring the quality of the Wi-Fi — another differentiating factor in Gill’s view.  “Our app has continually been tracking the speed of the Wi-Fi, the latency and other actual performance

indicators. So the goal, long term, is not just to be the most definitive Wi-Fi database but find the best free, comfortable, fast, non-congested Wi-Fi hotspots out there. And I think that’s

something that none of the other apps are really doing,” he adds. Figuring out whether a Wi-Fi hotspot is free (or not) is done via clustering algorithms and by parsing a host of signals

(no pun intended), such as the location itself — if it’s a bar or cafe vs an office or residential property then it might be more likely to be free, for instance. It’s also taking the name

of the Wi-Fi network into consideration. And OpenSignal detects whether there’s a re-direct post login, which Gill notes can be an indicator of a payment gateway. And while it’s tried to do

a lot of this automatically, post-launch it will also be engaging its users in crowdsourcing more Wi-Fi intel. “The crowd can curate on top of our automatic algorithm what they think. Then

we believe long term it’s the combination of this machine learning algorithm we’ve built up and then this engaged set of users tweaking the database a bit is going to give us the cleanest

and best free Wi-Fi database ever,” he adds. At launch, WiFiMapper users will not be pushed to using OpenSignal’s cellular data tracking app — which is where it’s drawing its revenue from at

the moment (selling anonymized network quality intel back to telcos and others). But Gill says that’s something it wants to move towards “long term” — albeit it would likely offer

WiFiMapper users the option to opt out from contributing cellular data. “I think the line will get blurred because when it comes to Wi-Fi and mobile network signal it’s quite similar, so we

think there’s going to be a good overlap there. And the kind of people that would like to curate Wi-Fi would also like to submit data about mobile network signal strength as well but ideally

long term we would like to unite those communities, and to do it in a  very transparent way, giving users granular control over what data they contribute,” he adds. While WiFiMapper is a

free download, Gill adds that OpenSignal may look to monetize it directly in future via offering in-app purchases for additional features — such as offline access to the hotspot maps, which

could be useful for travelers wanting to locate connectivity without having to enable cellular roaming. Beyond that, there’s a grander vision around boosting contextual app awareness which

OpenSignal is working on here. “Part of the vision we’re working towards is understanding sensory data and trying to be really intelligent with it, so actually we see the potential of this

data as being — as area we’re really getting into is contextual awareness, and recognizing where a user is based on a wi-fi hotspot we think is interesting data, and could be used to make

more intelligent applications that understand if you’re in this wi-fi hotspot — if you’re in a cafe or you’re in a cinema — it’s just providing additional intelligence to what an app knows

and can actually do based on that context,” says Gill. “We see this data as being valuable and we would like to build intelligent products using this data,” he adds. “If we can keep things

free of ads we would like to do that.” OpenSignal raised a $4 million funding round last August to expand its team and push into tracking additional areas. Gill says it’s not currently

looking for any more funding.