Kozen-X · Supplement app · iOS · Launching 19 July

Supplements shouldn't be a guessing game.
Know exactly what you're taking — and what your body needs next.

Kozen-X tracks every supplement you own — expiry, timing, what clashes with what — and flags brands that aren't third-party tested. Connect Apple Health and it tells you what your body needs next.

what the first 300 get
Every clash
Supp × supp · food · meds
2-way Apple Health
Reads workouts · logs doses
<90 sec
Workout ends → suggestion lands
First 300
Free access, for life
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Works with the data you already track · Apple Health at launch · more coming
Here's what that looks like

Tuesday, 14:22.

Mockup. Your run ends — suggestions land before you finish stretching. Every dose you log syncs back to Apple Health.

01.
Your cabinet

Every supplement you own, actually understood.

Add what you take and Kozen-X tracks the rest — expiry, best time of day, what to pair it with, and what it clashes with. If a brand isn't third-party tested, you'll know.

Tracks
Expiry · dose · timing · food pairing
Clash checks
Supp × supp · supp × food · supp × medication
Best time to take
Morning · pre-workout · with food · night
Trust flags
Not third-party tested? Flagged.
02.
The data

Your watch tracks everything. It tells you nothing.

Connect Apple Health. Kozen-X reads your workouts, HRV and sitting time to suggest what your body needs — and every dose you log is written back to Apple Health.

Reads
Workouts · intensity · HRV · sedentary time
Writes back
Your doses → Apple Health medications
Every suggestion
Backed by graded evidence
Workout ends → suggestion lands
Under 90 seconds
03.
Your stack

A daily stack built for your life.

Finish your profile and get a recommended daily stack for how you actually train, sleep and work. Buy it in-app or anywhere else — either way, it's logged.

Your stack
Personal · matched to your routine
Buy anywhere
In-app or outside — both logged
In-app perk
Kozen Points → future discounts
Free tier
Log up to 3 supplements, free forever
What the engine covers

Six categories. Zero guesswork.

01
Longevity essentials
Vitamin D, omega-3, magnesium glycinate. The proven daily basics.
Daily
02
Performance fuels
Creatine, electrolytes, whey isolate. Timed to your training load.
Triggered by training
03
Recovery protocols
Magnesium, glycine, ashwagandha. For when your HRV dips.
Triggered by HRV
04
Cognition & focus
Caffeine + L-theanine, alpha-GPC. For the deep-work block.
On-demand
05
Hydration protocols
Electrolytes with ratios built for Singapore heat. No sugar.
Daily
06
Everyday fundamentals
Fibre, vitamin C, B-complex. Cheap, proven, easy to skip.
Daily
Pre-register · Launching 19 July

First 300.

Free for the first 300. After that, a month costs less than your Starbucks coffee — a year, less than half your Netflix subscription. Launching 19 July. No newsletter, no spam.

Free tier: log 3 supplements  ·  iOS · Launching 19 July