RESEARCH TOOLS
Free interactive tools, backed by research
Calculators and assessments built around the consumer health and product research published on GiftedPicks. Every tool is grounded in primary-source citations and links back to the underlying research.
Gifting
Gift Finder
Answer 4 quick questions — budget, who it’s for, their vibe, and the occasion. Get one best-match gift guide plus 4 runner-ups, each with the exact reason it matched, and a shareable results link.
Find the gift →Supplements
Supplement Stack Builder
Answer 6 questions about your goals, sleep, energy, training, and dietary preferences. Get a personalized 3–5 supplement stack ranked by how well each one fits — with editorial reasoning and links to our tested picks.
Build my stack →Skincare
Skincare Routine Builder
Answer 5 questions about your skin type, top concern, commitment level, budget, and active tolerance. Get a personalized 4–8 step routine matched to your skin profile with direct links to tested products for each step.
Build my routine →Hair Care
Hair Growth Routine Builder
Answer 5 questions about your top hair concern, hair type, scalp condition, active tolerance, and commitment level. Get a personalized 3–6 step routine — shampoo, scalp serum, leave-in, supplement, tool — matched to your profile.
Build my routine →Plastic-Free Living
Microplastic Exposure Calculator
Answer 8 questions about your daily habits. Get an exposure score on a 0–100 scale plus a prioritized list of the swaps that would reduce your exposure most. Backed by Cox 2019, Mason 2018, and Marfella 2024 NEJM research.
Start the assessment →In development
Tools we're actively building. If any of these would be useful to you and you want first access when they ship, drop us a note — user input shapes what we prioritize.
Supplement Stack Conflict Checker
Coming soonCheck whether the supplements in your stack have known interactions, absorption conflicts, or timing issues. Built from peer-reviewed pharmacology data.
Red Light Therapy Wattage Calculator
Coming soonInput your treatment goal (hair regrowth, skin, recovery) and get the recommended irradiance, wavelength, and session-length range from the published trial literature.
Skincare Ingredient Conflict Checker
Coming soonPaste your routine; get a per-step warning for known irritation pairs (retinoid + AHA, vitamin C + niacinamide, etc.) with the supporting research.
How these tools are built
Every tool starts with a peer-reviewed evidence base — we read the primary literature first, then design the inputs and weighting around what the published data actually supports. Tools are explicitly relative-ranking instruments, not precise medical instruments. Methodology is disclosed on each tool page.
Built by Kevin Geary. If you're a researcher with relevant expertise and want to suggest methodology improvements, please email kevin@giftedpicks.com.