Calculate your dose, set up your cycle and titration plan, rotate sites, then see every dose next to your side effects, your weight and what your labs say.
Free for one compound, no time limit. Premium if you track more than one.
Regimen is a free peptide tracker app for iPhone and Android that keeps your doses, schedules and progress in one place.
It does the reconstitution math, holds cycles with start and end dates, rotates injection sites per compound, tracks supply and beyond-use dates, shows an estimated half-life curve between doses, and keeps side effects, daily markers, weight and bloodwork on the same timeline, with pattern detection across all of it. Free for one compound, no time limit; Premium if you track more than one. 200+ compounds and brands, rated 4.8 across the App Store and Google Play.
You log the dose. Regimen connects it to everything else you track.
Enter the vial size and how much bacteriostatic water you added, and Regimen gives you the exact units to draw on an insulin syringe. It works backwards too: pick the unit count you would rather draw and it tells you how much water to add. The concentration saves with the vial, so you never redo it at 6am.
Daily, every other day, weekly, specific days, every X days, a split week, as-needed. Cycles get a start date, an end date and a reminder, so four weeks on and two weeks off stays on the calendar instead of in your head. Each compound keeps its own.
A free estimated level curve for 150+ compounds. See roughly where you sit between doses instead of guessing, and how levels build across a cycle rather than one dose at a time.
Regimen suggests the next spot, lets you add your own beyond the standard ones, keeps a separate set and rotation for each compound, and rests a sore spot until you say otherwise. Running three compounds subQ no longer means three mental maps.
Energy, sleep, appetite, mood, joint pain, water retention, injection-site reactions. Each with a level and a date, next to the dose, so when you add a compound or change one, you can see what moved afterwards and what did not.
Scan your lab reports. Your markers plot against your dose history with out-of-range values flagged, so you can see whether the compound you started actually moved the number.
Unlike other apps, Regimen helps you see the entire picture of your health and what you are taking. Every dose, cycle, side effect, daily marker, weight change and lab result lands on one timeline, and built-in pattern detection surfaces your patterns against your own baseline, anchored to the things that actually changed: started, stopped, raised, lowered, cycled off. That is how you understand how your peptides are affecting your health.
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Wk 16★★★★★“I tracked everything on a physical wall calendar for over 5 years before moving to Google Calendar and Tasks… I finally found Regimen through Reddit discussions. I was definitely skeptical at first, especially since I have about 20 compounds in rotation and figured entering all that data would just end up being wasted time. But after about two days of using Regimen, I was completely sold. The dose scheduling, reconstitution calculator, visual graphs, and side-effect logging are dialed in perfectly.”
★★★★★“Tried a bunch of other apps and deleted all of them. This is the only one that actually works how I need it to. Love how easy it is to track multiple compounds and the calculator feature is incredible.”
★★★★★“If you are using multiple supplements and peptides, this is the app for you… It lets me build my stack with exact dosing info… You can track qualitative stuff like perceived energy, food noise, nausea etc. Then all of that feeds into progress summaries that are insightful and actionable. It caught the HR increase from Reta before I did.”
The schedule, the reminders, the site rotation and the units to draw all build themselves from the first dose you log.
★★★★★ 4.8 · 850+ ratings on the App Store and Google Play
A peptide protocol is rarely one compound on one schedule. People run two or three at once, on different days, at different times, some of them cycling on and off, and each one wants its own injection sites so the same spot is not taking everything.
That is the part a once-a-day reminder app is not built for. Compounds run on different schedules, cycles start and stop on dates nobody writes down, sites need rotating per compound, and a mixed vial has a beyond-use date. Run three or four at once and the protocol stops fitting in your head.
| Schedule | What it looks like | Commonly run this way |
|---|---|---|
| Daily | Same time every day, often before bed or fasted. | The most common shape, about a third of active compounds. |
| Every other day | Shifts by a day each week, so it drifts out of your head fast. | Recovery and repair compounds. |
| Specific days | Mon/Wed/Fri, fixed to the calendar rather than an interval. | About one in five active compounds. |
| Split week | Two to four doses a week, each with its own day, time and amount. | Anything where one large dose is harder to tolerate. |
| Cycles | Weeks on, weeks off, with a start and an end date. | About one in four peptide users has at least one compound cycling. |
Regimen holds all of these at once, each compound on its own, with reminders that follow the schedule rather than a single daily alert. If you also need the vial arithmetic, that is the peptide calculator.
There is no label to read off for most of these compounds, which is exactly why your own record is the evidence. These are the things peptide users most commonly keep next to the dose.
| What you track | Why it is tracked | How often | Worth knowing |
|---|---|---|---|
| Energy and sleep | The first things people notice move. | Daily | Most useful when logged before you go looking for a change |
| Injection-site reactions | Redness, lumps, soreness at a spot. | Per dose | Tells you when a site needs resting, not just rotating |
| Weight and body composition | The change you only see over weeks. | Weekly | Syncs in from your phone, no typing |
| Bloodwork | The objective check on a protocol. | Per panel | Only comparable if the dose history sits next to it |
The value is not any single day. It is the same marker logged the same way across a cycle, next to the compound, dose and schedule you were actually on at the time.
This page is for tracking and education. It is not medical advice, and Regimen does not recommend compounds, doses or stacks. What to take and how much belongs with your provider.
Regimen is the most comprehensive peptide tracker: injection logging, custom scheduling with cycles and dose titration, reconstitution calculators, half-life tracking, injection site rotation, supply tracking, side effects and 50+ daily markers, bloodwork, weight and health metrics, 200+ compounds, and pattern detection across all of it. Free for one compound, no time limit; Premium if you track more than one. We compare it honestly against every other option in our peptide tracker app comparison.
Regimen runs on both, with the same features on each, and your data syncs between them. That is worth checking before you commit: PepTracker, the simplest of the peptide trackers, is iOS-only. Weight and health metrics sync in on both, and there is a web app too.
Yes. Regimen is a free peptide app for one compound, with no time limit and no credit card. The free tier includes most of the app: the reconstitution calculators, estimated level curves, injection site rotation, side effects and daily markers, bloodwork, weight and health metric sync, and pattern detection. Premium is only for tracking more than one compound at a time.
Yes. Each compound gets its own start and end date, and Regimen shows where you are in the cycle rather than leaving it in your head. Run several compounds on different cycles and each keeps its own timeline, so on weeks and off weeks stay visible per compound. Your protocol shows up as a day-by-day calendar with a reminder for each dose.
Yes. Enter your vial size in mg and how much bacteriostatic water you added, and Regimen gives you the exact units to draw on a standard insulin syringe. It works in reverse too: pick the unit count you would rather draw and it tells you how much water to add. The concentration is saved with the vial, so you do it once.
Yes. Supply tracking keeps what you have on hand and nudges you when you are running low, so you can reorder before you run out rather than the morning you find an empty vial. It also stores the concentration you mixed, so the units to draw stay right for that vial, and it keeps the beyond-use date once it is reconstituted.
Yes, and it is what Regimen is built for. Each compound keeps its own dose, schedule and cycle, and they all appear on one timeline. Each one gets its own estimated level curve, so you can check any of them without Premium getting in the way. That includes running retatrutide (reta) alongside recovery peptides like BPC-157.
Yes. Regimen covers 200+ compounds and brands across peptides, GLP-1 medications and testosterone, in one protocol view. Most trackers pick one category; if you run a stack that crosses categories, that usually means two or three apps.
Yes. Scan a lab report or enter it by hand, across 25+ lab markers, and see them plotted against your dose history, so a change in a marker sits on the same chart as the protocol that might explain it. Out-of-range values are flagged. Fasting glucose, lipids, testosterone, E2, SHBG, hematocrit and IGF-1 are all in there.
Yes. Regimen ships on iPhone and Android, including Google Health Connect for wearable and health data. Several peptide trackers are iOS only, so this is worth checking before you commit to one.
Threads comparing peptide trackers come up constantly in r/Biohacking and r/peptides. Regimen is our answer for multi-compound protocols; the full comparison, including the apps those threads discuss, is in our best peptide tracker apps review.
No. Regimen is a tracker, not a prescriber. It records the compounds, doses and schedules you and your provider chose, does the reconstitution and syringe math for them, and shows what changed afterwards. It does not recommend compounds, doses or stacks; what to take and how much belongs with your provider.
A peptide tracker app (or peptide tracking app) records every peptide dose you take: what, how much, when and where you injected it. It keeps that history in one place so you can see your protocol instead of remembering it. Regimen logs the dose in a tap, reminds you on whatever schedule your protocol actually runs, does the reconstitution math from your vial size and BAC water, rotates your injection sites per compound, and uses built-in pattern detection to show you what is changing across your doses, markers, weight and labs.
Free to download. Free for your first compound.