GLP, GLP-1, and Why the Distinction Matters
GLP stands for glucagon-like peptide. It is the name of a family of hormones produced in the gut in response to food. The family includes GLP-1 and GLP-2, which have different roles in the body. GLP-2, for instance, is involved in intestinal growth and repair, whereas GLP-1 is the appetite- and glucose-regulating hormone that medicines like Wegovy (semaglutide) and Mounjaro (tirzepatide) are designed to mimic or amplify.
When GLP-1 is released after a meal, it signals to the brain that you are full, stimulates insulin release, and slows the rate at which the stomach empties. Medicines that act on the GLP-1 receptor — called GLP-1 receptor agonists — reproduce and extend these effects. Semaglutide (the active substance in Wegovy) works exclusively on the GLP-1 receptor. Tirzepatide (the active substance in Mounjaro) acts on both the GLP-1 receptor and a second receptor called GIP, making it a dual agonist.
Understanding this distinction is useful context, but it does not change how either medicine is taken or managed — those decisions belong with your prescriber or doctor. For a closer look at how GIP fits into the picture, see our page on the difference between GLP-1 and GIP.
In everyday conversation and online forums, "GLP" has become shorthand for the whole class of injectable weight-management medicines. You will hear phrases like "GLP medication", "GLP journey", or "GLP community" used loosely to mean medicines in this family — and that is largely fine as informal usage, as long as you know what is actually being referred to when accuracy matters.
If you are weighing up the two main medicines in this class, our comparison of Mounjaro and Wegovy covers the factual differences in neutral detail, and our overview of Wegovy vs Mounjaro brings together the key points in one place. For those already on Mounjaro and curious about dose steps, the difference between 2.5 mg and 5 mg Mounjaro explains what those stages represent.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
Tracking the right four numbers — weight, waist, protein and dose — turns a noisy chart into a clear story. That's the loop GLP-1 users keep coming back for.
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Tracking Your GLP-1 Journey with GLP Trackr
Whichever medicine you have been prescribed — whether it acts on GLP-1 alone or on both GLP-1 and GIP — GLP Trackr is built to support that journey from day one. The most relevant starting point for most people is the insights and analytics feature: as you log doses, weight, food, and how you feel each day, the app builds a picture of your own patterns — what is shifting, when things plateau, and what correlations emerge in your data. That context can make conversations with your prescriber more informed and productive.
Alongside insights, the daily check-in takes under a minute to complete and captures weight, mood, energy, food-noise levels, and sleep — the fuller picture that the scale alone cannot tell you. And if you ever want to bring a clear summary of your progress to an appointment, the doctor report view pulls your logged data together in a readable format.
GLP Trackr supports both Mounjaro and Wegovy users. Whatever your prescribed medicine, the tracking works the same way — log it, understand it, and use it to stay consistent.
If symptoms feel severe, persistent, or worrying at any point, contact your healthcare professional promptly. GLP Trackr is here to help you record and understand your experience — it is not a substitute for clinical advice.
Ready to bring your journey into focus? GLP Trackr is available free on the App Store and Google Play, with a 7-day trial to get started — no commitment needed.
What does glptrackr include?
10+ powerful features. One app. Built specifically for Mounjaro and Wegovy users.
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Morning Check-In
Start every day with a 60-second wellness check-in. Log how you're feeling, track nausea, appetite, energy, and mood — giving you and your care team a complete picture of how your medication is working.
Injection Tracking
Log every dose with a single tap. Track your dose history, phase in your cycle, estimated medication levels, and upcoming injection dates — with reminders so you never miss a scheduled shot.
Hydration Reminders
Staying hydrated is especially important on GLP-1 medications. Set daily water targets, log intake throughout the day, and receive smart nudges when you're falling behind your goal.
Smart Meal Planning
Personalized meal plans built around your current dose phase and side effects. Every meal is GLP-1 optimized — high in protein, gentle on the stomach, and scaled to your reduced appetite.
Recipe Library
Browse 50+ high-protein, GLP-1-friendly recipes filtered by meal type, prep time, and dietary needs. Every recipe includes full nutrition info, step-by-step instructions, and tips for eating with side effects.
Progress Analytics
Beautiful, easy-to-read charts show your weight loss trajectory, weekly nutrition trends, medication responses, and wellbeing scores over time — turning raw data into genuine insights.
AI Meal Scanning
Snap a photo of any meal and get a full nutrition breakdown in seconds — calories, protein, carbs, fat, and fibre. No searching. No manual logging. Just point, snap, and track.
Exercise & Steps
Log walks, workouts, and movement with activity targets that flex with your energy levels. On lower-energy dose days, gentler targets keep you moving without burning out.
Community Support
Connect with thousands of others navigating the same medication journey. Share milestones, ask questions, find accountability partners, and get support from people who truly understand.
Never Forget a Dose Again.
Log your Mounjaro or Wegovy injection in seconds. Track your pen, your dose level, and your injection site — so you always know exactly where you are in your treatment.
Watch Your Body Transform, Week by Week.
Log your weight, measurements, and how you're feeling after each dose. GLPTrackr turns your data into clear, motivating charts that show you how far you've really come.
You're Not on This Journey Alone.
Connect with thousands of real GLP-1 users sharing their wins, side effect tips, and meal ideas. Get the support of people who truly get it — because they're living it too.
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The first AI built exclusively for GLP-1 weight loss. Every insight, every meal plan, every prediction trained on one thing only: helping you get the most out of your medication.
Knows Your Cycle
GLPIQ tracks where you are in your injection cycle and adjusts everything around it: lighter meals on nausea days, higher protein when appetite returns, and smarter targets as your medication level shifts.
Predicts Before You Feel It
GLPIQ learns your personal side effect patterns over time. After a few cycles, it starts warning you the morning before a rough day — and adjusts your meal plan automatically.
Finds Your Golden Dose
GLPIQ analyses every dose you've been on: weight loss rate, side effects, food noise, mood, protein adherence and tells you which dose gave you the best results. No other app does this.
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Frequently asked questions.
GLP-1 stands for glucagon-like peptide-1. It is a hormone released in the gut after eating that helps regulate appetite, slows stomach emptying, and stimulates insulin release. It is the receptor pathway targeted by prescription weight-management medicines such as semaglutide and tirzepatide.
Not exactly. GLP (glucagon-like peptide) is a broader family of hormones that includes GLP-1 and GLP-2. In everyday usage, "GLP" is widely used as shorthand for GLP-1-based medicines, but technically GLP-1 is one specific member of the wider GLP family.
A GLP-1 receptor agonist (such as semaglutide) acts on the GLP-1 receptor only. A dual GLP-1 and GIP receptor agonist (such as tirzepatide) acts on both the GLP-1 and GIP receptors. Which medicine is appropriate for any individual is a decision for their prescriber or doctor.
In casual conversation, using "GLP" to mean GLP-1-based medicines is widely understood and generally fine. When accuracy matters — such as discussing your treatment with a healthcare professional — using the correct term, GLP-1, or the medicine's brand or active substance name, is clearer.