Journal
Hiyd and wearable news and updates
What we are learning about continuous health tracking, the sensors behind it, and how Hiyd is being built.
Is a Subscription Wearable Worth It for Recreational Athletes? An Honest Cost-Benefit
The hardware cost is only the beginning. Here's what subscription wearables actually cost over two to three years, what recreational athletes really use the data for,...
Read articleGoogle Fitbit Air Review 2026: Is the Subscription Model Worth Paying For?
A full review of the Google Fitbit Air in 2026, including an honest look at the subscription model, total cost over time, and whether no-subscription alternatives...
Read articleWithings ScanWatch 2 Review: Is It Worth the Premium?
An honest look at the Withings ScanWatch 2's ECG accuracy, battery life, subscription structure, and hybrid design, and who it actually suits.
Read articleThe Wearable Subscription Trap: What You Pay When You Stop Reading the Fine Print
Wearable subscription cost looks manageable on day one and quietly compounds into something much larger by year three. Here's what the major subscription wearables actually cost...
Read articleWhy Wearing Two Devices on One Wrist Is Actually a Problem (And the Fix)
Wearing a fitness tracker alongside your watch creates real friction, from physical discomfort to aesthetic compromise and fragmented data. Here is why the two-device setup consistently...
Read articleHow Much Does WHOOP Actually Cost Over Five Years? The Full Breakdown
The headline price is rarely the whole story. Here's a concrete, year-by-year breakdown of what WHOOP actually costs over five years, compared against other wearable models.
Read articleWhoop vs Garmin: Which Health Tracker Fits Your Life?
A practical comparison of WHOOP 5.0 and Garmin Vivoactive 6 on cost, health metrics, and who each device actually serves. Includes a third option for people...
Read articleHow to Improve VO2 Max: Methods That Actually Work
What VO2 max actually measures, which training methods move it most reliably, and how consistent tracking helps you see real progress without guesswork.
Read articleResting heart rate and HRV: the two numbers worth watching
Your step count tells you what you did. Resting heart rate and heart rate variability tell you what it cost you, and whether you are ready...
Read articleThe Best Health Trackers for Mechanical Watch Fans in 2026
A comprehensive guide to the best health trackers for mechanical watch fans in 2026, covering every realistic option, including an approach that does not require removing...
Read articleHow to Test VO2 Max at Home in 2026: Methods, Tools, and What to Do With the Figure
A practical guide to estimating VO2 max at home in 2026. What each method involves, how accurate the results are, and how to use your figure...
Read articleHow to Add Health Tracking to Any Luxury Watch in 2026
A practical breakdown of every option for adding biometric health tracking to a luxury watch in 2026, including what each approach costs and what you give...
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