Before the first decision
Cortisol peaks in 30 minutes. The on-device model already knows whether last night's HRV earned a green light — or a green-tea swap.
HRV68ms+4 vs 7-day
FeatureAI Coach
UNFAIRUNFAIRYour protocol. Your data. Your results.
The biohacking companion built for you.
Seven moments. One system that sees them all.
Scroll to see the day.
Cortisol peaks in 30 minutes. The on-device model already knows whether last night's HRV earned a green light — or a green-tea swap.
Creatine for maintenance. L-theanine to flatten the caffeine curve. D3 because you're indoors today. Reasoning rendered inline — no mystery meat.
Dose logged with timestamp, form, and interaction check. Your yesterday-self left a bioavailability note for your now-self to read.
Focus score climbs through the L-theanine peak. The app goes quiet until you drop below your own threshold.
Cut my afternoon crash in half. I didn't change caffeine — I changed timing.
Mood +2, energy -1. Tagged against today's stack and yesterday's sleep. Three weeks in, patterns surface without asking.
Magnesium in 90 minutes — not sooner. Your sleep onset is 12 minutes faster when the window is tight. The app knows because it watched.
Glycine, magnesium, a dim screen. Tomorrow's recommendation is already waiting — on-device, encrypted, yours alone.
Five capabilities only on Unfair.
Built on device. Built first. Built for you.
HealthKit · on-device · real time
380+ supplements. 40 categories. 1600+ cited studies.
Built from your stats, your stack, your schedule
Your AM, your PM, your way
2–8 week N-of-1 experiments · baseline vs intervention
Sixteen hours of decisions. Zero packets. Every optimization you just watched happens inside your iPhone. The details that make you unfair should stay for your eyes only.
Supplement science today runs on studies of 20–50 people. Opt in, and your anonymized results join the largest real-world supplement dataset ever assembled.
The library that powers the Unfair iPhone app is available as an API. 384 supplements, 781 health outcomes, and 3,919+ graded evidence edges. All behind one contract with versioned releases and audit trails.
$curl -H "Authorization: Bearer $UAF_TOKEN" \ "https://unfairapp.com/api/library/v1/supplements/creatine"
HTTP/1.1 200 OKx-library-version: 2026-04-21T16:39:00.000Z
{ "slug": "creatine", "displayName": "Creatine Monohydrate", "dose": { "typical": "5g", "unit": "g/day" }, "safety": { "interactions": [] }, "evidence": { "tier": "A" }}Creatine Monohydrate
/supplements/{slug}