The Calorie Deficit Tracking App Built for Mounjaro and Wegovy Users

Many people taking Mounjaro (tirzepatide) or Wegovy (semaglutide) find their appetite drops noticeably — a commonly reported effect linked to how these medicines act on appetite-regulating pathways. That reduced hunger can make it tempting to eat very little, but consistently eating too little can mean missing out on protein, micronutrients, and the energy needed to stay active and feel well.

Tracking a calorie deficit gives you a real picture of the gap between what you eat and what your body uses. It helps you spot when intake has dipped lower than intended, when protein targets are being missed, or when a mid-week stall might be linked to under-fuelling rather than the medicine itself.

What good deficit tracking looks like on GLP-1s

• Protein first: many people aim to anchor meals around protein to preserve muscle while in a deficit — tracking makes it easy to see whether you are hitting a general daily target.
• Calorie floor awareness: tracking highlights days when intake is unusually low, so you can make an informed choice about whether to eat a little more.
• Pattern recognition: seeing data across several weeks — not just individual days — reveals whether your deficit is consistent or erratic, which matters more than any single day's numbers.
• Progress context: weight on a scale does not always reflect a calorie deficit accurately week to week; pairing calorie data with weight trends gives a fuller picture.

For a broader look at how calorie deficit principles apply throughout your GLP-1 journey, the calorie deficit on GLP-1 medicines guide covers the topic in depth. If you are comparing ways to log your food, our overview of what makes a calorie tracking app work well on GLP-1s is worth reading alongside this page.

The feature that makes the biggest difference for most users is the AI photo scan for food logging. Point your phone camera at a meal — a plate of scrambled eggs, a takeaway container, a home-cooked bowl — and GLP Trackr breaks down the calories, protein, and macros instantly. When appetite is low and cooking feels like effort, removing the friction from logging is what keeps the habit going.

From there, the daily check-in and targets dashboard lets you set a personalised calorie and protein goal, track progress through the day, and see at a glance whether you are in your intended deficit or have drifted. The insights view then connects those daily numbers to your weight trend over time — so if your weight has been flat for two weeks, you can look back and see whether your actual intake matched your plan.

For days when a meal comes from a packet, the barcode scanner pulls nutrition data automatically. And if you prefer to plan ahead, the GLP-1-friendly meal library and weekly meal plans are built around protein-forward, gentle-on-the-stomach options that fit naturally into a deficit without leaving you under-nourished.

Explore how GLP Trackr compares as an all-round meal tracking app for GLP-1 users, or revisit the calorie deficit guide to tie the numbers to your wider journey goals.

General calorie and protein ranges are useful reference points, but the right targets for you depend on your individual circumstances. Always follow the guidance of your prescriber or doctor — they know your full health picture and can advise on what deficit is appropriate for you.

Ready to see your deficit clearly, day by day? Download GLP Trackr on the App Store or Google Play and start a free 7-day trial — snap your meals, set your targets, and watch the patterns emerge.