🧬 Peptide Tracker + Reconstitution Calculator

Stop guessing.
Start tracking.

StackLog tells you exactly how many units to draw on your syringe — and keeps a private, offline log of every dose you take.

$10
One-time payment  ·  Own it forever  ·  All features included
Get Instant Access
🧮 Reconstitution Calculator
Vial
5 mg
BAC Water
2 mL
Dose
250 mcg
10
units to draw · U-100 syringe
Doses / Vial
20
Concentration
2.5 mg/mL
Everything included

Built for people who actually know what they're injecting.

No generic wellness app. No account. No cloud. Just the tools serious biohackers need.

🧮
Reconstitution Calculator
Enter vial size, BAC water, and desired dose. Get exact U-100 or U-40 syringe units instantly — with auto-warnings if your draw is unsafe.
💉
Unlimited Dose Logging
Log every injection with date, time, peptide name, dose, units drawn, injection site, side effects, and notes. No entry limits.
✏️
Fully Editable History
Every past entry can be edited in full — not just deleted. Change any field on any log at any time.
🧬
Compound Tracker
See your entire active stack at a glance with per-compound dose counts and quick-reference pills.
📊
Insights Dashboard
Breakdown by compound, symptom rate, 7-day activity, most-used injection site, and streak tracking.
📥
CSV Export
Download your complete log anytime. Share with a provider, import to a spreadsheet, or keep for your own records.
Try it now — free

The calculator that finally does the math for you.

Type your real numbers below. No sign-up required to try the calculator.

↑ Enter your vial info above to see results
Privacy first

No account. No cloud. No one watching.

Everything you log stays on your device. StackLog never sends data anywhere.

✓
No account requiredOpen and use instantly
✓
100% local storageData never leaves your browser
✓
Works offlineNo internet needed after download
✓
You own your dataExport as CSV anytime
What's included

One file. Everything unlocked.

You get a single self-contained HTML file — open it in any browser on any device. Save to your home screen and it works like a native app.

✓
Reconstitution CalculatorU-100 & U-40 · dose reference table · automatic safety warnings
✓
Unlimited Dose LoggingEvery field editable · injection site rotation · side effect tracking
✓
Insights DashboardCompound breakdown · 7-day activity · streak counter · symptom rate
✓
Full History ViewEvery dose grouped by date · scroll your complete protocol history
✓
CSV ExportDownload your complete log anytime for your own records
✓
Works on any deviceiPhone · Android · Mac · PC · No install required
Pricing

Simple. One price. Yours forever.

No subscription. No recurring charges. Pay once and own it.

$10
One-time payment  ·  Lifetime access  ·  All features
✓ Reconstitution calculator (U-100 & U-40)
✓ Unlimited dose logging
✓ Fully editable history
✓ Insights dashboard
✓ CSV data export
✓ Works offline, no account needed
✓ iPhone, Android, Mac & PC
Get Instant Access — $10
Delivered instantly as a single HTML file  ·  Works in any browser
FAQ

Common questions.

What exactly do I get? ▾
A single self-contained HTML file with every feature unlocked. Open it in any browser on any device — iPhone, Android, Mac, PC. No install, no login, no app store. Save it to your home screen and it works like a native app.
Where is my data stored? ▾
Everything is stored locally in your browser's storage on your device. Nothing is ever sent to a server. Your peptide logs are completely private to you.
Does it work on iPhone and Android? ▾
Yes. Open the HTML file in Safari (iPhone) or Chrome (Android), tap Share → Add to Home Screen, and it installs as a full-screen app icon on your phone. No App Store required.
Is there a recurring charge? ▾
No. $10 once — that's it. No subscription, no renewal, no hidden fees. You own the file forever.
Is this medical advice? ▾
No. StackLog is a personal tracking and calculation tool only. It does not provide medical advice, recommend doses, or replace guidance from a qualified healthcare professional. Always verify dosing with a professional before use.
⚠️ For personal tracking purposes only. StackLog is not a medical device and does not provide medical advice. The reconstitution calculator is a math tool — always verify calculations and dosing with a qualified professional before use.

Ready to track your stack the right way?

$10 once. No subscription. Works on any device.

Get Instant Access — $10