Ultrahuman rings, including the new Ring Pro, come with an extensive app. Get better heart rate accuracy in Ultrahuman ring workouts by using a different deviceSmart rings don't make great workout trackers, as I've told you before. If you have another device, like a Garmin or even a basic chest strap heart rate monitor, you can have Ultrahuman use that more reliable device for your heart rate during workouts. "Train" your Ultrahuman ring for better accuracyA new feature in the Emerald update is the ability to "train" your ring's heart rate detection algorithm. Save battery on your Ultrahuman ring with Chill ModeOne of Ultrahuman's most useful features is a simple battery-life setting that you won't find unless you go looking for it.