We're flooded with fitness oriented wearable devices from the step/activity trackers like the Fitbit and Up to smartwatches like, of course, the Apple Watch. Some phones even have dedicated activity tracking chips.
The sad reality, though, is that most of devices are basically the same. They do step tracking. A few add some extra dimensions of motion capture, or have some additional functionality like sleep tracking, or online tools for food tracking. They're all about quantifying your day and they're mostly passive companions. You may get a short vibration when you hit some goals, but that's kind of it.
There are exceptions, and one of them is Moov. A few years back, I preordered it based on a tweet from a friend and one feature I hadn't seen before: it pairs with dedicated smartphone apps to provide live feedback during workouts.
So far, they have dedicated apps for Running/Walking, for Cardio Boxing, Swimming, and the trendy 7-minute workout (with Cycling on the way).
I've been using the Running app as I come back from my shin splints injury. As I run, the app provides feedback on my balance, stride frequency, and posture, making sure I'm landing without too much force or jarring of my leg. So far, the runs feel better on my legs when using the app, and it's been good about keeping me from running to fast or too aggressively (it talks to you to stay within a certain stride frequency). It's simple, but very useful.
I also tried the 7-minute workout app for the first time today. The workout is based on the workout the NY Times covered in The Scientific 7-minute workout. It's not the exact same workout, instead using a simpler set of exercises with multiple reps. It did feel good this morning - the muscles I don't workout regularly were slightly sore, and the app's feedback and rep counter worked well.
Every time I use this device, I'm impressed. I'm surprised it doesn't get more buzz, to be honest. It's way more useful than any other fitness tracker I've tried. Totally recommended.