Track Your Mounjaro Protocol Step by Step
Six titration steps, one app. See how every Mounjaro dose change affects your weight, appetite, and energy.
Tirzepatide (Mounjaro) — Weekly GIP/GLP-1 Injection
Regimen is the Mounjaro tracker app for people who want clarity on their tirzepatide journey. Mounjaro's six-dose titration schedule means your body responds differently at each level — Regimen captures it all. Log every injection, track your weight at each dose, monitor GI side effects, and see exactly when your medication delivers the most impact. Regimen connects your doses to health data from Apple Health or Google Health Connect, with PK modeling built on published pharmacokinetic data and FDA prescribing information. Free — every feature unlocked for your first medication. No paywall, no trial, no credit card. 4.9-star rating on iOS and Android.
Mounjaro is powerful — but the pen system is confusing.
Dual agonist means dual complexity:
Keeping track of which pen strength you're on across 6 different dose levels (2.5 to 15 mg)
Remembering your exact injection day each week when life gets busy
No easy way to see whether your weight loss is from the medication, diet changes, or both
Dose with precision
Regimen handles the complex math so you don't have to. Two built-in calculators give you exact numbers every time.
Peptide reconstitution calculator
Input your vial size, bacteriostatic water volume, and desired dose. Regimen tells you exactly how many units to draw on your syringe.
mL dose calculator
Enter your prescribed dose (mg) and concentration (mg/mL) to get the precise injection volume. Perfect for testosterone and oil-based compounds.
Never miss a dose. Never miss a cycle.
Stay consistent with zero effort. Regimen supports every dosing schedule you could need, with smart reminders to keep you on track.
Every schedule you need
Daily · specific days · split-week · every X days · twice daily · as-needed. Injections, pills, creams, sprays. Your protocol, your way.
Cycle management
Set your cycle duration and get alerts when it's time to cycle off or begin again. No more mental math or calendar counting.
See what's actually working
Correlate every compound and dose change against real health data. Stop guessing which protocol is moving the needle.
Auto-sync from Apple Health & Google Health Connect
Weight, body fat, sleep, resting heart rate, and blood pressure flow in automatically. No manual logging required.
Track how you feel, not just what you measure
Log energy, sleep quality, cravings, and daily notes alongside your biometrics. See the full picture of how your protocol affects you day to day.
Correlate medications with health trends
Changed your TRT dose three weeks ago? See exactly how your weight, sleep, and heart rate responded. Every dose change is overlaid on your health charts.
Know what's in your system
See estimated concentration curves for your compounds in real time. Know if you're at peak, trough, or steady state without waiting for labs.
Pharmacokinetic modeling for 40+ compounds
Regimen uses half-life data to model absorption, peak levels, and decay for every dose you take. See how levels build up over multiple doses.
Peak, trough & steady state visibility
Understand where you are in your dosing cycle at any moment. See projected future levels based on your current schedule.
Why tracking Mounjaro matters
6 dose tiers, zero confusion
Mounjaro's 2.5 → 5 → 7.5 → 10 → 12.5 → 15 mg titration is the most complex GLP-1 schedule. Regimen tracks exactly where you are.
GIP + GLP-1 dual action insights
Mounjaro's unique dual mechanism means different response patterns than pure GLP-1s. Track your specific response curve over time.
Apple Health correlation
Automatically overlay your weight, body fat, and activity data against dose changes to see the real impact of each titration step.
Related Tools & Guides
What Regimen Tracks for Mounjaro
Why people are switching to Regimen
"I was juggling my peptide schedule between a notes app and my calendar, and I was constantly stressed about missing a dose. Regimen fixed all of it. The reminders and calculator are essential."
Alex T., Bio-Optimizer
"I finally feel in control of my weight loss journey. The photo comparison feature is addictive. Seeing my progress next to the tracking data motivates me way more than just the number on the scale."
Sarah K., GLP-1 User
How Regimen compares to other Mounjaro tracker apps
Most GLP-1 trackers are single-purpose logs. Regimen is a multi-compound tracker with PK modeling, lab correlation, and a free tier that covers one full medication. Here is how the current crop stacks up.
| App | Pricing | Multi-compound | PK blood-level modeling | Lab integration | Apple Health + Health Connect | Free tier |
|---|---|---|---|---|---|---|
Regimen | Free for 1 med, $4.99/mo Pro | Yes | Yes | Yes | Yes | Yes |
| $49.99/year | No | No | No | Partial | Partial | |
| Free | No | No | No | Partial | Yes | |
| $10/month | Partial | No | Partial | Yes | No |
Sources verified May 24, 2026: Shotsy (App Store + Google Play), Glapp (App Store; Android is a PWA), MeAgain (App Store + Google Play). Pricing reflects current published model per each app’s listing. Feature coverage based on publicly available app descriptions as of May 2026.
Your data stays private
Your health data is stored securely. We never share, sell, or monetize your information. What you track is your business, not ours.
Frequently Asked Questions
How do I log Mounjaro by pen strength across the six titration steps?
Select the pen (2.5, 5, 7.5, 10, 12.5, or 15 mg) and confirm the injection. The app stores every titration step with timestamps, so you can see exactly when each new dose started and what changed in your weight, appetite, and side effects after.
Can Regimen track both branded Mounjaro and compounded tirzepatide?
Yes. Branded Mounjaro logs by pen strength. Compounded tirzepatide logs by mg per dose since vial concentrations vary by pharmacy. The dose calculator handles both, and your history stays continuous if you switch between them.
Does Regimen track HbA1c and glucose on Mounjaro?
Yes. CGM data (Dexcom, Libre) syncs via Apple Health or Google Health Connect, and fingerstick readings can be entered manually. HbA1c, fasting glucose, and time-in-range plot against your Mounjaro dose timeline on a single chart.
What Mounjaro side effects can I log?
GI symptoms (nausea, vomiting, diarrhea, constipation, sulfur burps, reflux), plus fatigue, sleep quality, mood, appetite intensity, food aversion, and the food-stuck feeling. Custom markers cover injection-site reactions or birth control backup windows after each titration step.
How does Regimen compare to Shotsy, Glapp, or MeAgain for Mounjaro tracking?
See the comparison table above. Short version: those apps are GLP-1-only and treat Mounjaro mostly as a weight-loss log. Regimen handles the T2D side (glucose, A1c, full lab integration) alongside the weight tracking, plus any other compound in your stack.
Can I track lab work and progress photos alongside Mounjaro doses?
Yes. Labs plot on a long-term trend with your dose history overlaid, and progress photos store with timestamps so you can scrub through visible body composition changes across each titration step.
Is there a free Mounjaro tracker in Regimen?
Yes. The free tier covers one compound, including Mounjaro, with full dose logging, side effects, weight sync, glucose logging, and lab tracking. Pro ($4.99/month) unlocks multi-compound stacks and the Signals pattern engine.
Does Regimen treat Mounjaro and Zepbound the same way?
The underlying compound is identical (tirzepatide), so the math and PK curves match. The difference is framing: the Mounjaro view surfaces T2D markers (glucose, A1c) more prominently, while Zepbound emphasizes weight trajectory and body composition. Your data flows the same way regardless.
Stop guessing. Start optimizing.
Your protocol deserves better than a notes app and a calendar.