Routine workspace
Set up each compound once: dose, schedule, cycle, and a color tag. Your routine, organized the way you actually run it.
Dose Logs, Reminders, Vial Math
Peptide Tracking Made Simple
Log peptide, GLP-1, and TRT routines, manage reminders, calculate vial usage, and track injection history from one clean app.
Download app4.9/5 Customer Score
One app, the whole routine
The peptide tracker app that holds it all.
No more notes app, calendar pings, and camera-roll screenshots. Loop keeps your doses, schedule, injection sites, and the vial math together — so nothing slips.
Schedule & reminders
Pick your interval and let Loop do the remembering. Push reminders tell you what's due, so you never have to guess.
Logs & notes
Log a dose in two taps. Save the site, jot a note, and mark a 0–5 pain level — a clean record every time.
Reconstitution calculator
Enter your peptide amount, BAC water, and target dose. Loop shows exactly where to draw on a visual syringe — pure math on your numbers, never medical advice.
Set up once, run it daily
How Loop works.
Add the routine you already follow, let Loop hold the schedule and the reminders, and log each dose as you go. No spreadsheets, no sticky notes, no guesswork.
Step 01
Add your routine
Enter your compounds, doses, and schedule once — daily, every other day, cycles, the lot. Loop keeps it all in one place.
Step 02
Stay on schedule
Loop follows your intervals and sends a reminder when a dose is due, so you're never relying on memory.
Step 03
Log in two taps
Tap to record each dose with the site, a note, and a pain level. Back-fill anything you missed.
Step 04
See your consistency
Watch your streaks, rings, and calendar fill in — a clean, complete history of what you took and when.
Built to stay on track
Your routine runs itself
Never miss a dose
A reminder when each dose is due and a clean "today" list you can tap to log. No more scrolling back through notes trying to remember if you already did it.
Vial math, done
Enter your peptide, BAC water, and target dose once, and Loop shows exactly how much to draw on the syringe. The part everyone dreads, done in seconds.
See your progress
Streaks, rings, and a full history show your consistency at a glance — so you can see the routine adding up instead of guessing.
Why people pick Loop
Made for self-injection routines.
Loop replaces the patchwork of notes, calendars, and screenshots people use today with one tool built for the job.
★★★★★
Clean daily trackingLoop feels like the tracker I kept trying to build out of notes and calendar reminders. Everything has a place.
Daniel R.Peptide routine tracker
★★★★★
Fewer missed logsInjection site history is the thing that makes this useful. I can see what I did last time before I log the next dose.
Maya K.GLP-1 tracker
★★★★★
Simple mathThe vial math support is the reason I would keep this on my phone. It makes the practical side of tracking much calmer.
Marcus S.TRT and peptide routine
Simple, honest pricing
Pick your plan.
Billing runs through Apple in-app purchase, and you can cancel anytime from your settings.
Yearly
3 days freeBest value — save 67%
$3.33per month
$39.99 billed annually
- Full dose logging & history
- Reconstitution calculator
- Flexible schedules & reminders
- Export your data anytime
Start 3-day trial
Free for 3 days, then $39.99/year. Renews automatically until cancelled.
Monthly
FlexibleMonth to month
$9.99per month
No annual commitment
- Full dose logging & history
- Reconstitution calculator
- Flexible schedules & reminders
- Export your data anytime
Continue monthly
$9.99/month. Renews automatically until cancelled.
Questions, answered
Frequently asked questions.
A few common questions about what Loop does, what it doesn't, and how your data is handled.
What can I track in Loop?
Your compounds, doses, schedules, and cycles, plus a full log of what you took, when, the injection site, and an optional note and pain level.
Does Loop tell me what peptides or doses to take?
No. Loop never recommends peptides, dosages, or protocols, and it isn't medical advice. It only organizes the routine you enter yourself.
What does the reconstitution calculator do?
You enter your peptide amount, BAC water, and target dose, and it shows how much to draw on a visual syringe. It's pure math on your numbers, not medical guidance.
Can I track my injection sites?
Yes. Log the site with each dose so you can rotate sites and see your history in one record.
How does the free trial work?
The yearly plan starts with a 3-day free trial. You won't be charged until it ends, and you can cancel anytime before then through Apple.
Is my data private?
Yes. You can start anonymously, export your data whenever you want, and delete everything to wipe your records for good.
Available on iOS
Stay on track, every day
Add your routine, set a reminder, and log your first dose in minutes. No spreadsheets, no guesswork.