PepSync: Peptide Calculator

One clear answer for every reconstitution — draw-to units, live vial counts, and schedules you author. One-time purchase. No subscription, no account, no cloud.

Know exactly what to draw.

PepSync turns the numbers on your vial label amount, water, syringe into one clear answer: the units to draw to. Then it keeps the books: what's left in every vial, when each one should be discarded, and the schedule you built for yourself.

No spreadsheet. No napkin math. No squinting at tick marks.

ALL-NEW IN 2.0 Version 2 is a complete redesign a ground-up UI overhaul built around one idea: the answer comes first. A cleaner dark interface, a streamlined four-tab layout with a quick-add button always under your thumb, and every number you'd act on rendered in crisp monospace. Faster to read at 7 AM, faster to log, easier to trust.

THE CALCULATOR

• Answer-first: the draw-to units stay pinned while you adjust inputs
• Clean-mark check: if your numbers land between syringe marks, PepSync suggests the water amount that fixes it
• Show Math: every step of the calculation in plain English — verify anything
• Blend support: multi-component vials with per-draw breakdowns
• Reverse calc, water calc, unit converter (mcg / mg / mL / IU / units), and titration tools

VIALS THAT COUNT THEMSELVES

• Log an entry and the vial's remaining count ticks down automatically
• Discard countdown runs from your reconstitution date
• Projected-empty date tells you in advance whether you'll finish a vial before its discard day
• Multiple vials of the same compound? One wears the "in use" badge logging just works
• Optional cost tracking per vial

SCHEDULES YOU AUTHOR

• Build simple daily plans or staged ones — step changes, on/off phases, multiple compounds — entirely from your own entries
• "Up next" shows what you scheduled, when, with your rotation site
• Missed an entry? It's recorded honestly. Plans never shift and never double up
• Optional reminders that respect your privacy: lock-screen text is discreet by default

YOURS ALONE

• Local-first by architecture: no account, no server, no analytics, no cloud copy
• Your data lives in a database on your iPhone — the only way it leaves is you tapping Export
• Full backup and restore: one file, readable, yours
• Filterable history with CSV export

ONE-TIME PURCHASE Pay once, own it. No subscription. Restore anytime on your Apple ID.

PepSync is a calculation and record-keeping utility. All compounds, amounts, and schedules are entered by you; the app performs unit math on your numbers and organizes your records. It does not provide dosing recommendations, protocols, or medical advice. For research and educational purposes only. Consult a qualified professional for health decisions.