Track your protocol. Stay consistent.

Peptide Pilot is a personal logger built for people who run a peptide protocol and want every dose, every vial, and every weekly weight in one place that opens in under two seconds. The app is structured around the daily reality of a protocol: you take a dose, you log it, you forget about it. The math, the streak, the vial countdown, and the weight trend update themselves so you never have to keep a parallel spreadsheet.

On the public web, the same project also publishes free peptide calculators, per-peptide reference pages, and plain-English guides. The calculators run the math without an account; the reference pages and guides are educational reading. The iPhone app is where the data actually lives — every calculation can be saved against a specific vial so you don't re-enter the same numbers twice.

Nothing on this site is medical advice. The calculators and the guides are tools for handling the arithmetic and the logging workflow that surrounds a protocol. Decisions about whether a peptide is appropriate for any specific person, what dose, what frequency, and what supplier — those belong with a licensed clinician who has the full picture.

Most protocols fall apart in the same place: the moment the dose is over, the logging is the lowest-priority thing in the day. A spreadsheet that lives on a laptop or a notes app that requires four taps to find loses out to whatever is on the home screen, and within two weeks the log has gaps in it. Gaps in a log are not a small problem — they make trend analysis impossible and make every conversation with a clinician less useful than it could be.

The fix is not more discipline. The fix is moving the logging surface to where the friction is lowest: a single tap from the home screen, three seconds of input, automatic timestamp, automatic streak. That is the entire design brief for the app. Everything else — the calculators, the trend chart, the vial inventory, the macro tracker — exists in service of making the next dose easier to log than it was to skip logging it.

On top of that base layer, the math problem is genuine. Peptide doses are written in milligrams or micrograms, but they're drawn on insulin syringes calibrated in units. The conversion depends on the concentration of the reconstituted vial, which depends on how much bacteriostatic water was added, which depends on the vial size. Doing that arithmetic in your head every morning is how mistakes happen. A calculator tied to a specific vial removes the mental math entirely.

The four free calculators on this site each solve a slightly different version of the same arithmetic. The reconstitution calculator turns a vial size and diluent volume into a concentration and a syringe-unit count for a chosen dose. The dose calculator assumes the vial is already reconstituted and answers the daily 'how many units do I draw?' question directly. The mg-to-units converter is bidirectional for cross-checking. The vial-duration calculator estimates how many weeks one vial will last at your current frequency.

Inside the app, those calculators sit next to a logging surface that records the dose with a timestamp, attaches it to the right vial, decrements the vial inventory, advances the daily streak, and updates the weekly summary. A weight log lives next to the dose log so trend lines from both sit on one chart. A meal log captures protein, carbs, fat, and calories alongside the rest. A site-rotation tracker keeps a running visual of where the last few injections landed so the rotation pattern your clinician asked for actually happens.

None of those features require a data export to be useful. Everything is visible inside the app the moment it's logged. Export is available — and so is a complete delete — but the default expectation is that the app is fast enough to be the working surface, not a destination you eventually have to migrate off of.

The per-peptide reference pages and pre-filled calculators currently cover the common GLP-1 and dual-agonist protocols (semaglutide, tirzepatide, retatrutide), several growth-hormone secretagogues (CJC-1295, ipamorelin, tesamorelin), the healing peptides BPC-157 and TB-500, and a handful of metabolic and longevity peptides that come up frequently in reader questions. Each reference page documents typical vial sizes, common reconstitution volumes, mg-to-unit conversion at those volumes, and the most common mistakes people make when first using that peptide.

The calculators themselves are peptide-agnostic. The math works for any reconstituted vial regardless of the substance inside, so a peptide that doesn't have its own reference page is still fully supported by the four general calculators. The per-peptide pages are convenience wrappers — pre-filled examples that save you typing — not gatekeepers on what the math will accept.

Browse the full list on the peptide index, or jump straight to a calculator if you already know the numbers. Either way, the same underlying engine runs the conversion, so a result on a per-peptide page will exactly match a hand-entered result on the general calculator using the same inputs.

Every dose, every weight, every meal stays inside your account. There is no public profile, no social feed, no leaderboard, no advertiser pixel that fires when you log a dose. The data exists so you can use it; it is not a product being resold to anyone else. Account deletion removes the records from the live database immediately and from backups within the standard rotation window.

Export is a first-class feature, not a paywalled afterthought. Every log can be downloaded as plain CSV at any time so the data is portable to a clinician, a spreadsheet, or another tool of your choice. The export format is documented and stable across releases — moving your data out is meant to be friction-free precisely because it makes the decision to use the app in the first place a low-stakes one.

The free calculators on this site don't require an account at all. Open the page, enter your numbers, get a result. Nothing is logged to a server, nothing is tied to your identity. The calculators are pure client-side arithmetic — they exist because the math should be available to anyone who needs it, account or not.

The clearest fit is anyone already running a peptide protocol — most often a GLP-1 like semaglutide or tirzepatide, or a healing protocol with BPC-157 and TB-500 — who has noticed their log slipping and wants the friction of recording a dose to drop to almost nothing. The people who get the most out of the app are the ones who were already trying to track and were losing patience with a notes app or spreadsheet that wasn't keeping up.

It is also built for the planning side of a protocol: the calculators are useful before a vial is even ordered. Plugging candidate vial sizes and diluent volumes into the reconstitution calculator surfaces the option that lands at the friendliest syringe-unit count for your typical dose. The vial-duration calculator answers the reorder-cadence question before you discover mid-cycle that you're going to run out on a Sunday.

It is not built to replace clinical guidance, and the app is intentional about that boundary. Nothing in the interface tells you what to do next; it tells you what you've done and what's currently in the vial. The decisions stay with you and your clinician. The app's job is to make the data behind those decisions accurate and current.

If you have a vial in front of you right now and need a dose calculation, the reconstitution calculator is the fastest entry point. Enter your vial mg, the bacteriostatic water you plan to add, and your target dose; the result tells you exactly how many units to draw on a U-100 insulin syringe.

If you're earlier in the process and want to understand the math first, the guides cover reconstitution from scratch, the difference between mg and units, the differences between syringe types, and how to set up a daily tracking routine that actually survives the second week. They are written in plain English and assume no prior familiarity.

If you're already running a protocol and want the logging side handled, the iPhone app is the destination. It opens to today, takes a dose log in three taps, and quietly handles the streak, the inventory, the trend chart, and the export in the background. There is a free tier to get started, no credit card required.