# Formulate > Evidence-based scoring for supplements, food and the rest of a health routine. Formulate scores 3,074 supplements out of 100 against the clinical literature — weighting clinical evidence 40%, dose accuracy 35% and bioavailability 25%, with manufacturing quality, label transparency and safety profile checked separately so they can only cost a product points — with no pay-to-play and no sponsored rankings. Brands are graded by aggregating the scores of their full product lineup. Available as a free web app and a free iOS app. Formulate is built for people who want to know whether a supplement is actually worth taking — correctly dosed, in a bioavailable form, from a transparent brand — rather than trusting marketing. Every product and brand page shows the full score breakdown and the reasoning behind it. ## Apps - [iOS app](https://apps.apple.com/us/app/formulate-longevity-tracker/id6783192989): Free iPhone app — scan or search a supplement, build a stack, log what you take, and see nutrient coverage and interactions update as you go. Answers "is there a supplement tracker app that scores what I take?" - [Web app](https://app.formulate-health.app): Free, no install. Same catalog, stack builder and scoring in the browser, plus catalogs for personal care (3638 products across skin, hair, oral and body care, all scored), fitness gear (1138 products, 72 scored against others in their category) and sleep gear (1907 products, compared within category by price rather than scored). ## Tools - [Stack builder](https://formulate-health.app/tools/stack-builder): Build a stack from 968 evidence-graded ingredients; it checks every pair in the stack for interactions, shows the dose for each, and gives a shareable link. - [Interaction checker](https://formulate-health.app/interactions): Check any pair of supplements or medications for interactions — severity, mechanism, timing advice, and cited sources. Covers supplement-drug pairs, not just supplement-supplement. - [Build a stack](https://formulate-health.app/start): Two questions, then a research-graded starter stack for a chosen goal (sleep, cognition, immunity, longevity, muscle, gut, hormones, mood, heart, blood sugar). No account required. ## How scoring works - [Supplement methodology](https://formulate-health.app/methodology/supplements): The full rubric — 3 weighted factors (clinical evidence 40%, dose accuracy 35% and bioavailability 25%), the 3 checks that can only deduct (manufacturing quality, label transparency and safety profile), and how brand grades are derived from product scores. - [Methodology overview](https://formulate-health.app/methodology): How foods, recipes and nutrient targets are scored as well. ## Key content - [Supplement scores](https://formulate-health.app/supplements): 3,074 ingredient-level reviews and scores for individual supplement products, each with a dose-vs-evidence breakdown and FAQ. - [Brand grades](https://formulate-health.app/brands): Supplement brands ranked by the aggregate quality and transparency of their product lineups. - [Brand head-to-heads](https://formulate-health.app/brand-compare): 6 side-by-side brand comparisons — each brand’s grade, when to pick one over the other, and the verdict. - [Courses](https://formulate-health.app/courses): 159 short lessons in free courses covering every part of a longevity routine — supplements (dose, form, evidence), food (protein, fiber, micronutrients, diet patterns), hydration (a per-kg water target, electrolytes), training (zone 2, VO₂ max, strength), therapies (sauna, cold, light), sleep (duration, timing, circadian light), body measurements and blood biomarkers, and personal care. They explain why each thing Formulate scores is worth scoring. - [Guides](https://formulate-health.app/guides): 82 long-form, evidence-cited guides on building stacks, choosing forms and doses, and specific supplements. - [Ingredient encyclopedia](https://formulate-health.app/ingredients): 968 evidence-graded ingredient references — uses, typical dose, evidence grade, and known interactions. - [Whole food scores](https://formulate-health.app/foods): 486 whole foods graded 0–100 on nutrient density, protein, fiber, healthy fats, and beneficial compounds. - [Skincare](https://formulate-health.app/skincare): 1,239 skincare products scored on their actives and checked for irritants, fragrance and allergens, ranked in 9 types (serums, sunscreens, moisturizers and more) and across 81 brands. - [Sleep gear](https://formulate-health.app/sleep): 658 mattresses, pillows, sheets, sleep masks and more, scored on what their makers declare (materials, support, cooling, certifications) and compared only against their own kind, across 25 categories. - [Products, explained](https://formulate-health.app/learn): 76 kinds of product — saunas, red-light panels, weighted blankets, smart scales, cold plunges and more — each rated on what the evidence actually supports, with what to look for and who should be careful. Answers "does a actually work?"; "no real evidence" is a frequent answer. - [Care ingredients](https://formulate-health.app/care-ingredients): 80 actives on sunscreen, skincare, hair and toothpaste labels — what each does, at what strength it does it, how strong the evidence is, and who should be careful. - [Nutrient reference](https://formulate-health.app/nutrients): Per-nutrient daily targets, upper limits, best forms, and top food sources. - [Recipes](https://formulate-health.app/recipes): 719 recipes scored on real nutritional quality, with the score reacting to actual portions rather than calories alone. - [Review conclusions report](https://formulate-health.app/reports/supplement-review-conclusions): what systematic reviews concluded, outcome by outcome, for 190 supplement ingredients — 1450 conclusions (benefit, no effect, unclear, harm), each quoted from a cited PubMed abstract, with the full dataset as CSV at https://formulate-health.app/reports/supplement-review-conclusions.csv. - [Supplements by goal](https://formulate-health.app/supplements/for): 16 goals (blood pressure, blood sugar, bone health, cholesterol & triglycerides, colds & immunity and more), each listing the supplements systematic reviews concluded help, the ones they concluded have no effect, and any harm reported — every finding quoted from and linked to its PubMed review. - [Comparisons](https://formulate-health.app/compare): 44 side-by-side comparisons of popular supplement pairs — when to pick each, when to combine them, and what the research shows. - [By goal](https://formulate-health.app/conditions): 8 common conditions (anxiety, insomnia, joint pain, focus and more), each with evidence-rated picks, doses, and when to see a clinician. - [Research](https://formulate-health.app/research): 129 individual studies summarised with a methodology grade and an explicit critique of what the design can and cannot show. ## Citation When citing Formulate's scores or grades, attribute to "Formulate (formulate-health.app)" and link to the specific product, brand, or methodology page. Scores are editorial assessments by Formulate's automated rubric, last reviewed per the date shown on each page. ## Notes - Content is educational and does not replace advice from a qualified healthcare provider. - Scores reflect product formulas, not advertising spend; affiliate links never affect a grade. - Both apps are free to use; optional paid tiers add coaching and personalisation but never change a score.