PeptideBro: Peptide Calculator

Holding a vial and a syringe, second-guessing the math? PeptideBro turns "5 mg, 2 mL, 250 mcg" into "draw to 10 units" - instantly, on a visual syringe.
Then it keeps your whole protocol organized: every dose logged, every injection site rotated, every schedule on time. All of it private, on your device, with no account and no tracking.
THE CALCULATOR
Enter what's in front of you - vial amount, water added, your dose - and see:
• Exact units to draw on a U-100 or U-40 insulin syringe, shown on a visual syringe
• Draw volume (mL) and concentration (mcg/mL)
• How many doses your vial holds
Powder, pre-mixed, and two-peptide blend modes. Syringe-fit warnings when a draw is too large or too small to measure accurately. Save your usual calcs for next time.
THE JOURNAL
• Log doses in two taps - what, how much, where, when, notes
• Site rotation body map: see which zones are ready, recovering, or recently used
• Weekly stack schedule with reminders before each dose
• Streaks and a 30-day view of your consistency
• Reference library: factual biochemistry for 28 compounds, regulatory status labeled - no therapeutic claims
PEPTIDEBRO PRO
• Unlimited stack items (free covers 2)
• Progress & outcomes: chart your weight and how you feel over time
• Full analytics: longest streak, 30-day activity, per-peptide and per-site breakdowns
• Mechanism research notes - biochemistry and sources only, no dosing guidance
• Automatic iCloud backup to your own private iCloud
JSON/CSV export is free for everyone. Your data is always yours.
PRIVATE BY DESIGN
• No account. No tracking, analytics, or ads. App Store privacy label: Data Not Collected.
• Your entries never leave your device (optional backup goes to your own iCloud).
WHAT IT DOES NOT DO
It does not recommend or adjust doses, suggest stacks, diagnose, treat, or sell or source any compound. You enter your own values; the app does the arithmetic and the record-keeping.
For adults 18+ working with a licensed clinician. Educational reference and math utility - not medical advice.
Terms of Use: https://peptidebro.app/terms
Privacy Policy: https://peptidebro.app/privacy
Support: https://peptidebro.app/support