Zenject app icon
Zenject
protocol as practice

Optimization is a
daily practice.

You're deliberate about your training and your nutrition. Your protocol deserves the same. Zenject is where you track it like the practice it is: every compound, dose, and result, logged with the same discipline you bring to the gym and the kitchen.

100% on your device, no account, no tracking
Daily checklist
Dose calculator
Titration
Blends
Site rotation
Reminders
Lab tracking
Body-comp trends
Journal & photos
QR import & export
Cloud sync
On-device privacy
70+
Compounds
70+
Lab Markers
Apple Health
iCloud Sync
The path

A guided path to follow.

Optimization isn't a moment of willpower.
It's a path you walk, one quiet day at a time.

Form

Set the protocol

Build it once, exactly: every compound, dose, reconstitution, schedule, and the sites you rotate.

Begin with intention, not guesswork.
Practice

Show up daily

Each day brings your doses to take and check off. The practice is simply returning to it.

Discipline, repeated, becomes ease.
Reflection

Reflect honestly

A daily check-in for how it lands — mood, energy, sleep — and notes you'll be glad to have later.

Awareness comes before adjustment.
Truth

Watch the truth emerge

Bloodwork and body composition, charted over time, until the pattern is clear.

Let the numbers, not the noise, guide you.
Today screen
Your daily rep

Show up for the work, one day at a time.

Today is your checklist: every dose due, grouped by time, in the order you take them. No spreadsheets, no math at dose time.

Exact units to draw, calculated for you
Injection-site rotation, tracked automatically
Gentle reminders, scheduled on-device
See it move

Watch your numbers move.

Your bloodwork and body composition, charted over time against the protocols you're running. See what's actually working, week over week, not just how you feel.

Weight, body fat, and BMI from Apple Health
Lab markers trended with their reference ranges
Your protocol periods shaded behind the curve
Timeline screen
Private by design

Your data never leaves your phone.

No servers. No accounts. No tracking. What you build is made on your device, and only you ever see it. Privacy isn't a setting here; it's the architecture.

On-device storageOptional iCloud syncZero third-party callsNo analytics
Not medical advice

Zenject is a personal tracking tool for educational and informational use only. It is not a medical device and does not provide medical advice, diagnosis, or treatment.

Zenject does not recommend, prescribe, endorse, or validate any compound, dose, schedule, or protocol. It only records what you choose to enter. Reference ranges are shown for context and vary by lab and individual.

You are solely responsible for what you choose to track and for any decisions you make. Always consult a qualified healthcare professional before starting, changing, or stopping anything.