Fujitsu just announced its new smartphone technology that can take the pulse of a user just by looking at his or her face. But if the "groundbreaking" device sounds familiar, that's because a host of small app developers have developed similar products in recent years.

On Tuesday, Mobihealthnews offered a roundup of competing apps that are available now that, like Fujitsu's new product, can measure variations in the brightness of a person's face caused by the flow of blood. Here is what's out there now:

Philips' Vital Signs Camera

Back in 2011, Philips launched an iPad app dubbed Vital Signs Camera that can measure your heart rate and breathing via the tablet's camera. Since then the company has released a version for the iPhone 4S as well, with the app selling for $0.99 in the AppStore.

Cardiio

Cardiio, a face-scanning pulse reader from MIT and Harvard researchers, was a hot topic back in 2010 when it took the form of a smart bathroom mirror. Now it's a popular iOS app with research-backed claims that the app gets within three bpm of the readings that a clinical pulse oximeter can provide. $2.99

Cardio Buddy from Azumio

Azumio's Instant Heart Rate app is a popular item in that it can track your pulse by placing your finger over your smartphone's camera. To compete with Cardiio, Azumio also offers its Cardio Buddy iOS app, which scans your face to detect heart rate. $1.99

E-Intuit's Magic Heartbeat Mirror

Hong Kong-based E-Intuit offers its own heart-rate checker as a "magic mirror." iOS only, and sells for $1.99 in the AppStore.

What's My Heart Rate? by ViTrox

This app is available for iOS, Android, and Windows 8 -- plus it's free, although features beyond checking your heart rate (such as storing or charting the data) are extra.

Heart Rate Camera by Intra Labs

IntraLabs' Heart Rate Camera -- for the iPad and iPhone -- claims to get an accurate reading in eight to ten seconds. The company also advertises face recognition software and an ECG-like chart display, with the app selling for $2.99. -- AFPRelaxnews

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