Peptide Tracker
Managing a peptide protocol isn't complicated. Keeping track of one is.
Dose logs, injection site rotation, vial expiration, reconstitution math, multi-compound stacks. This is what peptide tracking actually requires — and why a notes app doesn't cut it past week two.
The case for tracking
Why Peptide Tracking Matters
A single compound on a simple schedule is manageable without an app. Add a second compound. Add a loading phase. Add a vial that was reconstituted three weeks ago. The math gets unforgiving fast.
Dose accuracy
Peptide dosing is measured in micrograms. Eyeballing a syringe draw introduces real error. Tracking forces the reconstitution math every time — BAC water volume, concentration, units per dose.
Injection safety
Daily subcutaneous injection in the same site builds scar tissue. Rotation across 8–10 available zones prevents lipohypertrophy. You cannot rotate systematically without a log.
Results attribution
If you don't track what you're taking, when, and at what dose, you can't attribute your results to anything. You feel better — or worse — and you have no data to act on.
The Complexity Curve
What goes wrong
6 Peptide Tracking Mistakes
These aren't edge cases. They're the standard progression for anyone managing a peptide protocol without a dedicated system.
Reconstituted vials with no expiration tracking
The vial's been in the fridge for a while. You don't know how long. You inject anyway.
Bacteriostatic water preserves peptides for 28–30 days refrigerated. Past that, potency degrades — quietly, with no visible sign. You're dosing, but you don't know what you're dosing.
Injection site rotation by memory
You've been injecting left abdomen for two weeks. It's starting to feel different. You switch to right abdomen and keep going.
Repeated injection in the same location causes lipohypertrophy — scar tissue that reduces absorption and leaves visible lumps. Most people rotate between two or three sites when they have eight or more available.
Dose timing tracked in your head
You think you took your last dose at 7am. Or was it 8? You're not sure if it's been 24 hours.
Compounds with short half-lives require consistent timing. Approximate timing means approximate pharmacokinetics. More practically: uncertainty about the last dose leads to either skipping or doubling. Both are worse than logging.
Vial inventory managed informally
You're on day 10 of a 20-day cycle. You check the vial. Less than you thought. You run out on day 16.
Interrupting a cycle mid-run is worse than planning a shorter cycle from the start. Vial tracking is simple arithmetic — but only if you're doing it consistently.
Running multiple compounds with no stack view
BPC-157 twice daily. TB-500 twice weekly. Ipamorelin pre-sleep. Today is a BPC-157 day and also a TB-500 day and you're not sure if Ipamorelin goes before or after the other two.
Complexity compounds. Three compounds on different schedules, different vials, different reconstitution dates. There is no spreadsheet that handles this cleanly at 10pm when you're tired.
No record of what worked
Six weeks ago you were on a BPC-157 and TB-500 stack and felt noticeably better. You don't remember the doses. You don't remember the schedule. You're starting again from scratch.
Without protocol history, every cycle is a first cycle. The compounding advantage of tracked data — knowing what worked, at what dose, on what schedule — disappears.
The tracking list
What Peptide Tracking Actually Requires
The first three are non-negotiable. The last three matter as your stack grows.
Compound, amount in mcg/mg, time of injection, and syringe draw units. The minimum viable record.
Which zone of the body, rotated systematically across available sites. Critical for compounds injected daily.
Reconstitution date, BAC water volume used, doses remaining, batch number, vendor. Per vial, per compound.
On/off cycles, rest weeks, titration schedule, loading vs. maintenance phases.
All compounds running simultaneously — their interactions, timing conflicts, and combined daily load.
Weight, sleep quality, energy, side effect notes. How your body responds is part of the protocol.
The right tool
Why Protocol
Most health tracking apps are built for habits and workouts. Protocol was built specifically for peptide, hormone, and longevity protocols — the ones that require reconstitution math, injection rotation, and compound research in the same place.
Reconstitution Calculator
Built into every dose log. Enter vial size and BAC water volume, get exact draw units. Custom Draw mode works backwards — enter your preferred unit draw, get the BAC water volume to add.
Open free calculator →3D Injection Site Tracker
Tap anywhere on a 3D body map to log the injection site. Protocol tracks your full rotation history and surfaces the next recommended site. No zone goes unrotated.
See all features →Vial Management
Per-vial tracking: reconstitution date, BAC water used, doses remaining, batch number, vendor. Alerts before the 28-day expiration. Alerts before you run short mid-cycle.
See all features →Multi-Compound Protocols
Build stacks with any combination of compounds on any schedule. Daily, twice daily, every other day, specific days. The protocol view consolidates everything into a single daily checklist.
Try the stack planner →Protocol History
Every past cycle is stored and searchable. Browse what you ran, at what dose, on what schedule, and how you responded. Export as CSV or PDF to share with a provider.
See all features →AI Research Assistant
Ask anything about your compounds — half-lives, interactions, dosing windows, side effects — with context from your active stack. 81 compounds in the research library. 50 queries/month with Pro.
Browse compounds →Lab Work Tracking
Log blood panel results alongside your protocol — testosterone, estradiol, hematocrit, PSA, and custom markers. See how your labs move in response to dose changes over time. Export and email directly to your healthcare provider.
See all features →Progress Photos + BMI
Track before/after photos with a timeline and side-by-side comparison view. Daily check-in logs weight with a built-in BMI indicator. For GLP-1 and body recomposition protocols, this closes the loop between dosing and visible results.
See all features →Stack Synergy & Interactions
AI scores your active stack across six dimensions — synergy, redundancy, side effect risk, cost, complexity, and evidence quality — displayed as a radar chart. Built for stack builders who want to know if their compounds are working together or against each other.
See all features →Your data stays on your device.
Protocol stores everything locally. No account required, no cloud sync, no servers that see your health data. This isn't a privacy policy. It's the architecture — there are no servers to send your data to.
Stealth Mode — disguise the app entirely.
Change Protocol's home screen icon to anything — a weather app, a calculator, a blank icon. Require Face ID or Touch ID to open. Someone picking up your phone sees nothing that connects to your health protocol.
The only health tracking app with a built-in disguise. Built for users who run sensitive protocols and value discretion. Full privacy guide →
Free tools
Start with the free peptide calculator.
No download required. Five calculators on one page — reconstitution, PK half-life curves, TRT ester weight, GLP-1 titration, and stack cost. The reconstitution calculator includes Custom Draw mode: enter how many units you want to draw, get the exact BAC water volume to add.
Open Free Calculator →Frequently Asked Questions
What is a peptide tracker?+
Do I need a peptide tracking app?+
What should I track when using peptides?+
What's the best peptide tracking app?+
Can I use a spreadsheet to track peptides?+
How do I track injection sites for peptides?+
How do I track multiple peptides at once?+
What happens if I miss a peptide dose?+
How long does a reconstituted peptide vial last?+
Is Protocol free to use as a peptide tracker?+
Compounds in Protocol's Research Library
81 compounds with dosing guides, half-life data, and research summaries.
The peptide tracker built for serious protocols.
Protocol handles what notes apps and spreadsheets don't: injection site rotation, vial expiration, reconstitution math, multi-compound stacks, and cycle history — all on your device, no account required.
- ✓Core tracking free — no paywall on dose logging or reconstitution calc
- ✓14 days of Pro active at install — AI research, PK curves, stack tools
- ✓On-device only — no account, no cloud, no third parties
- ✓iOS and Android — same features on both platforms
- ✓5.0 ⭐ App Store rating