11 articles

Wearable Tech Reviews

In-depth reviews of health tracking wearables, CGMs, and diagnostic devices.

Best CGMs for Non-Diabetics: Are They Worth It?

Compare the CGM options for people without diabetes, from the brands' own pages, with wear time, price, and what the evidence does and does not show.

Longevity Intel editorial4 min read

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Smart Rings Compared: Oura Ring 4 and 5 Cost, Accuracy

Oura Ring 4 and Ring 5 prices and membership cost, how other smart rings compare on subscriptions, and what sleep and HRV validation studies found.

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Stelo vs Lingo: CGMs for People Without Diabetes

Dexcom Stelo vs Abbott Lingo from the brands' pages and FDA: price, wear time, who each is for, and what studies say about CGM use without diabetes.

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Wearable Accuracy: What the Studies Show

How accurate Oura, WHOOP, Garmin and Apple Watch are for heart rate, HRV, sleep stages and VO2 max, from ECG and sleep-lab studies with sample sizes.

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Garmin vs WHOOP

Garmin's Fenix line vs WHOOP 5.0 compared on price model, battery, sensors and the published HRV and sleep validation, with who each suits.

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Apple Watch for Longevity

Which Apple Watch health features have regulatory clearance or a published accuracy study, and which are wellness extras, by model and price.

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Best Fitness Trackers for Longevity in: Choose by Goal

WHOOP 5.0, Oura Ring 4, Garmin fēnix 8, and Fitbit Charge 6 compared by documented features, cost structure, and generation-specific validation.

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Dexcom Stelo Review: Price, Use, Accuracy Evidence

Dexcom Stelo from Stelo's site, FDA and studies: who it is for, price and plans, 15-day wear, independent accuracy findings, and what CGM evidence shows.

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Garmin Fenix 7 Review: A GPS Watch With Longevity Metrics

Garmin Fenix 7 from Garmin's manual and press pages: battery by size, how HRV Status and Body Battery work, and what validation studies say.

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WHOOP 5 Review: Features, Evidence & Limitations

A documentation-based WHOOP 5 and WHOOP MG review covering current plans, battery claims, ECG scope, recovery metrics

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WHOOP vs Oura: Two-Year Cost and What Studies Show

WHOOP 5.0 and Oura Ring 5 compared on two-year cost, battery and independent HRV and sleep validation, with prices re-checked 29 Sept 2026.

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Related tools for wearables

Best wearables 2026Ranked by use case WHOOP vs OuraSource-checked comparison HRV guideInterpret recovery scores Sleep protocolData needs behaviour