The simple way to run your peptide routine
The easiest way to track your peptide journey.
Log every dose, manage your peptide lineup, and track your progress — with Helix, your built-in AI peptide advisor, by your side 24/7.
Free forever plan. No credit card. Upgrade anytime.
Free plan includes 1 peptide, dose tracking, and 5 Helix messages/day
Built for every stage
Explore. Plan. Track.
Whether you're researching your first peptide or running a six-month routine, PeptideOS meets you where you are.
Explore
Browse 80+ peptides with dosing guides, how long each one lasts, popular pairings, side effect profiles, and everything you need to know before starting.
- Dose ranges & how long it lasts
- Popular pairings & interactions
- Side effects & what to expect
Plan
Build routines with dose ramp-up steps, on/off schedules, and pairing notes. Proven templates for weight loss, recovery, brain & focus, anti-aging, and hormone support.
- Dose ramp-up schedules
- On/off and break period planning
- Pre-built routine templates
Track
Log doses in one tap. Monitor consistency, supply, side effects, weight, labs, and progress photos. See what's working with data — not vibes.
- One-tap dose logging
- Consistency & supply tracking
- Weight, labs & progress photos
Your AI peptide advisor.
Knows your lineup. Always on.
Helix is the built-in AI inside PeptideOS. It knows your peptide lineup, your goals, your dosing schedule, and your recent logs — so every answer is grounded in your actual routine, not generic forum advice.
- Builds personalized peptide lineups. Tell Helix your goal, experience, and budget — get a personalized routine with dose, frequency, and the reason behind each peptide.
- Chat 24/7, grounded in your data. Ask about side effects, when to ramp up, how long to run, or what to pair — Helix sees your current routine and answers in context.
- Built for research, not hype. Calm, evidence-aware tone. Helix says when it doesn't know — and reminds you to talk to a doctor before changing your routine.
See PeptideOS in action
The full peptide routine, in your pocket.
Week 4 of 12See your full peptide lineup at a glance — peptides, doses, frequency, and what's next.
Based on 200+ reviews from peptide users worldwide
Trusted by serious optimizers
From first-time peptide users to clinicians — here's what people are saying about running their routine on PeptideOS.
Everything your routine needs.
Six core capabilities, designed to work together.
Peptide library
80+ peptides with dose ranges, routines, popular pairings, and what to expect. Always being updated.
Smart dose tracking
One-tap logging. Daily, weekly, or custom schedules. Never wonder if you took your shot today.
Dose ramp-up schedules
Pre-built ramp-up routines for weight-loss peptides, growth peptides, and popular lineups. Auto-advance through steps at the right pace.
On/off scheduling
Plan run periods, break periods, and lineups months in advance. Calendar view shows everything at a glance.
Supply tracking
Know exactly how many days of each peptide you have left. Get reminders before you run out.
Progress measurement
Weight, measurements, progress photos, symptoms, and labs — plotted alongside your routine so you can see what's actually working.
Helix AI advisor
Lineup-aware AI that knows your routine. Builds personalized lineups, answers questions 24/7, and grounds every reply in your actual data.
Learn as you go.
A growing library of guides, protocols, and deep dives — written for people who actually want to understand what they're running.
The beginner's guide to peptides
What they are, how they work, and what to know before your first shot.
Weight-loss peptide ramp-up explained
Semaglutide, tirzepatide, retatrutide — dose schedules, side effects, and how to ramp up without feeling awful.
Building your first peptide lineup
How to combine peptides for recovery, brain & focus, fat loss, or anti-aging — and what NOT to mix.
Free tools.
Use the mixing calculator without an account. Sign up free to unlock the rest.
Mixing calculator
Vial strength, mixing water, target dose — get mL per shot and units on a U-100 syringe.
Unit converter
Convert between mg, mcg, and U-100 syringe units. Free with an account.
Mixing calculator
mg / mLEnter your vial, mixing water amount, and target dose.
- Concentration
- 5.000 mg/mL
- Volume per injection
- 0.050 mL
- Insulin syringe (U-100)
- 5.0 units
- Doses per vial
- 40.0
For research record-keeping only. Not medical advice. Verify all calculations independently.
Simple pricing.
Start free. Upgrade when you're ready to run more than one peptide.
Free
- 1 peptide
- Dose tracking
- Helix AI — 5 messages / day
- Mixing calculator (unlimited)
- 30 days of history
Pro — Lifetime
- Unlimited Helix AI messages
- Unlimited peptides & routines
- Dose ramp-up & on/off planning
- Full peptide library access
- Supply tracking & reminders
- Progress tracking (weight, photos, labs, symptoms)
- Full history & exports
- All future Pro features included
- Priority support
Why we built PeptideOS.
Peptide routines have gotten more complex, and the tools haven't kept up. Spreadsheets break. Notes apps get messy. Generic medication trackers weren't built for peptides, on/off schedules, or dose ramp-ups. PeptideOS is what we wanted for ourselves — a serious tool for people running real routines. Clean, fast, and built around how you actually use peptides.
— The PeptideOS team