How we test.

1 · Test duration

Every product gets a minimum testing window before we publish:

• 30 nights — for sleep aids, white noise machines, sleep masks, and accessories
• 45 nights — for wearables (Whoop, Apple Watch)
• 60 nights — for flagship wearables (Oura), pillows, sleep monitors
• 90 nights — for smart beds, baby monitors, mattresses
• 120 nights — for premium mattresses (Saatva, Tempur-Pedic)

Some current reviews are synthesis-mode buying guides — the verdict is built from published specs, third-party test consensus, and reviewer experience with the category. Those reviews are clearly flagged. Hands-on tests are running now and will replace synthesis verdicts as they complete.

2 · Ground truth

For sleep-tracking accuracy claims, we compare against a clinical-grade Withings sleep mat as the reference. The mat isn't lab polysomnography — but it's the closest at-home reference that has been validated against PSG in published literature. We log every night to the same reference for the duration of the test window.

For comfort, ergonomics, build quality, and feature claims, we test in the real conditions you'd actually buy the product for: same room, same routine, blind partner test where the form factor allows it.

3 · Score dimensions

Every review scores the product on the dimensions that matter for its category. Wearables, for example, score on:

• Accuracy (40%) — sleep stage agreement with the Withings reference, averaged across the test window
• Battery (20%) — real-world endurance and charge cadence
• Comfort (20%) — wearability across sleep positions, in heat, during exercise
• Value (20%) — total cost over 24 months including subscription

Mattresses, smart beds, and sleep aids use category-specific weights. Each review surfaces the breakdown so you can recompute the score for your own priorities.

4 · Refusal policy

We publish negative reviews. If a product doesn't deserve a buy, we say so — with the score, the reasons, and what we'd buy instead. We've also published zero-product roundups (“the best smart pillow doesn't exist yet”) when the category isn't mature enough to recommend anything.

We say no when we test something we can't honestly recommend even with a footnote. That product simply doesn't get a review. The lack of coverage is the verdict.

5 · Disclosure

Every review with an affiliate link discloses the relationship at the decision point — the buy button — not just in the footer.

The full list of affiliate programs and approximate commission rates lives at /affiliate-disclosure. Affiliate revenue does not influence our scores: that's a structural commitment baked into the review template — scores are computed before the affiliate decision is made.

6 · Reviewer credentials

Health- and parenting-adjacent content is reviewed by credentialed experts before publication:

• Logan Foley, CSSC — Certified Sleep Science Coach. Reviews adult sleep tools, sleep science articles, and wearables.
• Marie Hansen, PSC — Pediatric Sleep Consultant. Reviews parent-zone tools, baby and toddler articles, baby monitors.

Tools and articles flagged reviewed have completed reviewer signoff. Tools flagged pending reviewhave shipped under our editorial process but have not yet received independent reviewer signoff — the verdict is ours, not the reviewer's.