Maintaining proper posture is important if you want to stay healthy and avoid neck and back pain. The ALEX Posture Tracker is a smart device that measures your neck angle and head position to prevent neck pain. It vibrates when you slouch and coaches you toward better posture.
ALEX sits on the back of your neck and lets you monitor your posture in real-time on your phone. The battery life lasts 7 days. This costs under $80 at this time.