About SomniSmart

SomniSmart is a free, science-based mattress advisor. You answer a short questionnaire and get three currently available mattresses from established brands: the best science match, the most practical all-rounder, and the best value.

How the matching works

• Medium-firm starting point. Research on spinal alignment and low-back pain supports medium-firm (about 6/10) as the best default for most adults.
• Sleep position. Side sleepers get softer pressure relief at shoulders and hips; back sleepers stay medium-firm; stomach sleepers go firmer to limit hip sag; combination sleepers get a balanced feel.
• Weight and BMI. Lighter sleepers lean softer; heavier sleepers, or a BMI over 30, lean firmer, thicker, and higher-density so the mattress does not bottom out.
• Body shape. Curvier hips with a narrower waist cap firmness at medium-firm with a softer comfort layer or zoned support, so the pelvis does not tilt. Broad-shouldered side sleepers get extra shoulder relief.
• Conditions and preferences. Back pain, joint pain, sleeping hot, mobility, and how much partner motion bothers you all shape the pick. For couples, we balance both sleepers.
• Material preference. Choose organic (GOTS/GOLS-certified, e.g. Avocado), natural (natural latex, wool, and cotton with no polyurethane foam), or commonly accepted as safe (CertiPUR-US foams, GREENGUARD Gold). We only list certifications confirmed by the brand or reputable reviewers.

Independent by design

Picks are ranked only by these rules. Some Shop links may earn us a commission, but that never affects what we recommend. Read our Affiliate Disclosure.

SomniSmart is an informational tool, not medical advice. See our Disclaimer.