The 4iiii software also lets you adjust your device's settings—you can set up the LED brightness and blink rate, adjust the audio volume, change the voice from male to female, check which sensors are currently paired with the Sportiiiis, and determine the sensitivity of the tap.
The iOS app is similar in function—it lets you set up the device, adjust zones for different sensors, and see which devices are paired. It also features a Live Data screen where you can see data from all of the sensors that are paired—including heart rate, speed, cadence, power, calories, and distance. This is useful if you're looking for actual numbers, rather than zone-related LEDs, to give you workout feedback.
The Sportiiiis + Viiiiva is an interesting concept, and it's executed fairly well. The Sportiiiis is small, lightweight, and attaches securely to your sunglasses, while the Viiiiva is easy to put on (using the snaps and elastic band), and simple to use. The iOS app is a nice touch, since constantly connecting your Sportiiiis to a computer to update it can get annoying, and I love the fact that the Viiiiva lets you connect the Sportiiiis to over 100 ANT+ sensors, including sensors from Adidas, Motorola, Schwinn, Wahoo Fitness, Timex, Garmin, and iBike.
This is a product for a very particular user, however. The Sportiiiis alone is mostly useful for people who need to constantly monitor their performance via heart rate, speed, or cadence, without having to look at a smart pedometer or an iPhone app. The LEDs seem like overkill unless you're running or biking very far, or are away from other sensors and trackers (such as those found on a treadmill). That being said, if you think having a digital fitness coach might help advance your workout, the Sportiiiis can help keep you focused, and will play nice with a long list of other devices to boot.
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