Garmin Cirqa Matches Rivals in 5 Accuracy Tests as Auto-Detection Misses Some Workouts
Updated
Updated · DC Rainmaker · Aug 7
Garmin Cirqa Matches Rivals in 5 Accuracy Tests as Auto-Detection Misses Some Workouts
3 articles · Updated · DC Rainmaker · Aug 7
Summary
Weeks of side-by-side testing found Garmin Cirqa broadly in line with Whoop 5.0, Fitbit Air, Amazfit Helio and Polar Loop across five areas: workout heart rate, activity recognition, sleep, steps and calories.
400-meter interval runs exposed Cirqa’s biggest weakness: the wrist version repeatedly missed heart-rate spikes in cooler conditions, while the bicep placement stayed near chest-strap accuracy; indoor cycling, most strength work and sleep tracking were generally solid.
Workout auto-detection was the more consequential problem because missed starts or early stops can leave gaps in heart-rate, training-load and recovery data; Cirqa often missed bike commutes and once cut off the final 45 minutes of a 3-hour ride.
Sleep timing and HRV trends were close to rivals, daily step totals usually fell within a 5%-8% band on non-riding days, and calorie estimates were consistent but varied by brand, with Cirqa tending lower and Polar often much higher.
The review says Garmin has improved detection over the past 10-12 days through app and backend changes, but still trails Whoop and Fitbit in automatic workout capture even as its overall sensor accuracy remains competitive.