Fitbit Air lost my open water swim data for hours. The fix is to record swims…
Category: Tests & Experiences
Google Health: Fitbit, We have a problem. A design problem.
A $99 screenless tracker has exposed the weak spots in Google's new Fitbit app. Google Health…
Fitbit Air – We Got A Problem – Cadence Lock
Fitbit Air produced cadence-locked HR during an indoor treadmill interval session, averaging ~157 bpm against a…
Fitbit Air vs Amazfit Cheetah 2 Ultra: Bike Sprint HR Test
The Amazfit Cheetah 2 Ultra returns ±3 bpm limits of agreement in a road bike sprint…
Amazfit Cheetah 2 Ultra: HR Accuracy in a HYROX Sim – plus SmO2 Sensor
The Amazfit Cheetah 2 Ultra was put through a HYROX simulation in a gym at 33°C.…
FORM Smart Swim 2 LT: Open Water SwimStraight Test
FORM's SwimStraight compass is meant to keep you swimming in a straight line without constant sighting.…
IoW Battery Test: Amazfit Cheetah 2 Ultra Hits 55hr Projection
A 100km Isle of Wight ride with the Amazfit Cheetah 2 Ultra alongside the Garmin Forerunner…
Strava Relative Effort – Everything You Need to Know (2025 Update)
Strava Relative Effort (RE) is the core tool for quantifying cardiovascular training load. Learn about the…
Is Whoop 5 / MG Accurate? – A Definitive Answer
When appropriately used, Whoop is an accurate device in the context of the accuracy levels that…
Wahoo WIND dynamics – A Deep Dive on the ELEMNT ACE
Wahoo Wind dynamics are certainly an interesting start. I'm unsure how useful the current insight is,…
Coros Pace Pro – GNSS Accuracy Test Result
Other reviewers have commented that Pace Pro has improved accuracy over Pace 3. It hasn't
Coros Pace 3 – the best GPS? (more tests including HR and Elevation)
Based on this test, Pace 3 is doing well when close to buildings
