Kozen-X · iOS · Singapore · 2026 · Vol. I

Most supplement brands sell you everything. Kozen-X is an honest shelf — a hand-vetted roster of SKUs that pass three tests for formulation, third-party testing, and price-fairness. Then we connect to your fitness data and tell you the single right thing to take, in one tap.

Join the waitlist →
I.
Chapter One · The shelf

A shortlist worth trusting.

We won't sell everything. Every SKU on the Kozen-X shelf gets vetted on three axes — formulation, third-party testing, and price-fairness. If a brand games one, it doesn't make the shelf. Founder-tier pricing locks for the first 500 on the waitlist.

SKUs at launch
~40, hand-picked
Categories
Performance · Recovery · Longevity · Cognition · Hydration · Fundamentals
Vetting axes
Formulation · Third-party testing · Price-fairness
Affiliate disclosure
Always visible · always honest
II.
Chapter Two · The data

Tracking is solved. Recommending is not.

You wear devices and ship thousands of data points a week. Your inbox has nine "weekly insights" emails. None of them tell you what to actually do. Kozen-X reads the data your body is already broadcasting and translates it into a quiet, accurate prescription — what to take, when, and why.

Day-one source
Apple Health
Roadmap
Whoop · Garmin · Oura · Fitbit
Engine
Evidence-graded, not vibes
Latency, signal → suggestion
Target <90 seconds
III.
Chapter Three · The loop

Data in. Decision out.
Cart closed.

Most apps stop at the recommendation. Kozen-X closes the loop: connect → learn → buy → repeat. One tap from the suggestion to the cart, with routing to the cheapest honest source — and your purchase history feeds the next recommendation.

Steps to checkout
One.
Routing engine
Cheapest honest source, every time
Reorder cadence
Auto-tuned to your training load
Kozen Points
Earned per purchase · redeemable shelf-wide
A snapshot · live recommendation

Tuesday, 14:22.

Mockup. Real-time, not retrospective: your watch finishes the run, the suggestion lands before you finish stretching, the cart is one tap from there.

An index, not a wall

Six pillars. ~40 SKUs.
One trustworthy shelf.

01
Longevity essentials
The boring, evidence-heavy daily stack. Vitamin D, omega-3 triglyceride, magnesium glycinate — formulated for absorption, not shelf appeal.
~8 SKUs · Always-on
02
Performance fuels
Pre / intra / post-workout. Creatine monohydrate, electrolytes, whey isolate. Triggered by training load, not by the calendar.
~9 SKUs · Triggered
03
Recovery protocols
Magnesium, glycine, ashwagandha — the inputs your body asks for when HRV starts trending the wrong way.
~6 SKUs · Triggered
04
Cognition & focus
Caffeine + L-theanine, alpha-GPC, omega-3. For the work-block before a deadline, not for general "brain support".
~5 SKUs · On-demand
05
Hydration protocols
Sodium, potassium, magnesium electrolytes. Ratio-correct for Singapore heat. No sugar in the high-end SKUs.
~4 SKUs · Always-on
06
Everyday fundamentals
The forgotten basics — psyllium fibre, vitamin C, B-complex. Cheap, evidence-rich, easy to skip and shouldn't be.
~8 SKUs · Always-on
Pre-register · Founder access

First 500.

No drip sequence. No newsletter. One email when iOS lands, founder-tier pricing on the Kozen-X shelf for life — and the first 50 to opt in get TestFlight access before public launch.

iOS · Web · Singapore first  ·  2026