How we test

You invest significant money into wearable technology so we invest weeks into testing every device before offering a verdict. We strip away the marketing hype to show you exactly how these products perform in the real world.

Real world testing over lab conditions

We prioritize real usage over sterile lab environments. While we appreciate the science behind the sensors, you do not live in a laboratory. You wear these devices while washing dishes, running in the rain, and sleeping in awkward positions. Our testing process reflects that reality.

We wear every device for a minimum of two weeks. This duration allows the battery to cycle multiple times and gives the algorithms enough time to calibrate to a specific baseline. We do not just wear the device. We live with it. This means the device stays on our wrist or finger 24 hours a day. We track sleep, workouts, stress levels and recovery metrics.

Smartwatch and fitness tracker protocols

Our testing for wrist-worn wearables focuses on three core pillars which are accuracy, battery life, and usability. We test heart rate accuracy by comparing to heart rate chest straps. We also take the device on runs through urban environments where tall buildings can block satellite signals. This helps us verify GPS accuracy in challenging conditions.

Battery life is another critical area. Manufacturers often quote battery life based on minimal usage. We test battery drain with all features enabled. This includes turning on the always-on display, maximizing screen brightness, and enabling continuous blood oxygen monitoring. We want you to know the worst-case scenario for battery life so you are never caught off guard.

Evaluating smart rings

Smart rings require a different testing approach compared to watches. The form factor is smaller and the sensors face different challenges. We pay close attention to comfort and durability. A ring sits on your finger while you grip weights at the gym or hold a coffee cup. We test scratch resistance by wearing the ring during these daily tasks. We look for scuffs and wear marks after a week of heavy use.

Sleep tracking is the primary function for many smart ring users. We compare the sleep stage data against a trusted baseline device. We often use an Apple Watch or a high-end Garmin device on the wrist while wearing the ring. We look for discrepancies in sleep onset times and wake times. If the ring says you slept for eight hours but you were awake reading for one of them, we will find that error.

Verifying the data

Data means nothing if it is not accurate. We employ a rigorous cross-referencing system. When we test a new device, we wear a control device on the other wrist. This allows us to spot anomalies immediately. If the test device shows a heart rate of 150 beats per minute while the control device shows 120, we know there is a problem. We use medical-grade blood pressure monitors to spot-check readings that offer blood pressure estimation.

Independence and trust

We maintain complete editorial independence – even though manufacturers sometimes send us review units. No brand pays for a review and no brand sees our content before we publish it. Our loyalty lies with you. We write these reviews to help you find the right tool for your health goals. We will always tell you if a product is not ready for the market.