Smartphone activity tracking apps have come a long way in the past few years, with functionality that makes them somewhat indispensable on rides for those of us who don't want to pony up the stack of cash required for a bike specific GPS unit. The one big downfall to relying on smartphone tracking has traditionally been the less than ideal situation of strapping your device onto your skinny little handlebars and hoping it doesn't fall victim to road obstacles or the elements. Wahoo swoops in to solve that dilemma with the RFLKT Bike Computer and ANT Bridge. The RFLKT braves the elements to wirelessly display the ride data your phone is recording while your phone itself stays safely tucked away in your jersey pocket. The RFLKT is Bluetooth 4. 0 compatible, and will work with popular cycling apps to store your data and let you know when you've conquered a new course record right on the screen in front of you. Compared to the RFKLT, the RFKLT adds in ANT connectivity with iOS devices, as well as a barometric altimeter to track altitude, gradients, and how far you've climbed. The RFKLT also adds in a thermometer so you always know the temperature out on the road. This computer displays cadence when paired with a compatible sensor, and you can customize the large, backlit screen to display the fields that are most important to you during your ride. Unlike your phone, the RFLKT computer is waterproof and shockproof, and it runs on a replaceable coin cell battery.