Supplement app · iOS · Launching soon

Know exactly what you're taking.
And what your body needs next.

Supplements shouldn't be a guessing game. Kozen-X tracks every supplement you own — expiry | timing | what clashes with food and meds — and flags brands that aren't third-party tested. Connect Apple Health and it tells you what your body needs next.

Early adopters get Kozen-X free — for life. In by 31 August. One confirmation email + launch news, nothing else · Privacy

Your run ends — suggestions land before you finish stretching.

Every clash
Supp × supp · food · meds
2-way Apple Health
Reads workouts · logs doses
Under 90 sec
Workout ends → suggestion lands
Free for life
Early adopters · in by 31 Aug
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 anywhere — either way, it's logged.

Your stack
Personal · matched to your routine
Buy anywhere
Any shop, any brand — always logged
Evidence
Graded + cited on every suggestion
After 31 August
A month costs less than your Starbucks
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 soon

Free. For life.

Early adopters until 31 August get Kozen-X free — for life. After that, a month costs less than your Starbucks coffee. Launching soon.

iOS · Launching soon · One confirmation email + launch news — Privacy