Apple Watch vs Garmin sleep tracking: a week of side-by-side tests

A week-long comparison of sleep tracking between the Apple Watch Series 12 and Garmin Cirqa found both devices reached the same overall readiness conclusion despite notable daily score differences. Apple's new Readiness Score gave a 7/10, while Garmin reported 70/100, indicating agreement on the user's energy level. Daily sleep scores varied significantly, including a 93 versus 62 on the first night and an unexplained 68 versus 87 on night six. Research cited in the article shows wearables generally converge on sleep duration and trends but can diverge sharply on sleep stages due to different sensors and algorithms. The author advises focusing on overall trends rather than individual data points, prioritizing bodily feelings over device scores.