Evidence-based. Privacy-first. Free, always.
Find Your Supplement is a personalized supplement recommendation engine built on PubMed research. It started as a mobile app and now has a web version so anyone can access it instantly, without downloading anything.
The problem we're solving
The supplement industry is a $177 billion market filled with marketing claims, proprietary blends, and influencer promotions. Most people don't know which supplements they actually need — and end up spending money on things that do nothing for their specific situation.
The science, however, is clear. Certain nutrients are systematically deficient in certain diets. Lifestyle factors like low sun exposure, intense exercise, or chronic stress create specific nutritional demands. Symptoms can point to likely deficiencies. None of this is secret — it's all published in peer-reviewed literature.
We built this tool to translate that research into simple, personalized recommendations — without selling you anything.
How the engine works
Our algorithm is a weighted, multi-dimensional scoring system calibrated against PubMed systematic reviews and clinical diagnostic accuracy data.
You answer a short quiz
Four steps covering your health goals, diet type, lifestyle factors (sun exposure, exercise, alcohol, caffeine, stress), and optional symptoms. No account required. Takes under 2 minutes.
We score each supplement
Our engine evaluates 15 supplements across four dimensions: your diet (strongest signal), lifestyle factors, reported symptoms, and stated goals. Each dimension is weighted based on its clinical diagnostic accuracy in the PubMed literature.
Results are ranked by relevance
Supplements are ranked by a relevance score (0–100) normalized to the data you've provided. High priority (≥60) means strong multi-dimensional support. Medium (30–59) means moderate relevance. Low (<30) is notable but not critical.
Evidence grades contextualize quality
Each supplement carries a grade (A–D) reflecting the quality of underlying evidence: A = meta-analyses and RCTs, B = multiple controlled trials, C = limited or small trials, D = preliminary or mechanistic evidence only.
Dimension weights
Weights sum to 50 for the web version (blood work and genetics are app-only features). Scores are normalized to the available dimensions to account for missing data.
Evidence grades explained
Meta-analyses & systematic RCTs
The gold standard. Multiple high-quality randomized controlled trials, often synthesized in systematic reviews and meta-analyses.
Multiple controlled trials
Several well-designed RCTs with consistent findings, or a smaller number of large-scale trials.
Limited or small trials
Some clinical evidence exists but is limited in scale, duration, or consistency. More research needed.
Preliminary evidence
Mostly in-vitro, animal studies, or very small human trials. Mechanistically plausible but not yet well-established clinically.
Privacy first
Your health data is personal. We treat it that way.
No account, no tracking
You never create an account. We never set cookies for tracking. Your quiz answers are processed entirely in your browser using JavaScript.
No server storage
Your health profile never leaves your device. It lives in sessionStorage — a temporary in-browser store — and is cleared when you close the tab.
No data sold, ever
We have no ad network, no analytics pipeline, and no data broker relationships. The business model is Amazon affiliate commissions only.
How we make money (transparency)
This site is free and has no subscription. Revenue comes exclusively from the Amazon Associates affiliate program. When you click “Buy on Amazon” and make a purchase, we earn a small commission (typically 1–4%) at no extra cost to you.
Our recommendations are based entirely on your quiz responses and the scientific literature — not on commission rates or brand partnerships. We link to the supplement category on Amazon (e.g., “Vitamin D3 supplement”) so you can choose the product that best fits your needs and budget. We don't push specific brands.
Try it yourself
The quiz takes under 2 minutes. No account, no email, no credit card.
Take the Free Quiz →